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23310331020 = 22325129501839
BaseRepresentation
bin10101101101011001…
…110110110010001100
32020011112111111201100
4111231121312302030
5340214421043040
614413021143100
71453436354514
oct255531666214
966145444640
1023310331020
11998208a789
1246266baa90
1322764663a2
1411b1bd0844
159166aeb30
hex56d676c8c

23310331020 has 36 divisors (see below), whose sum is σ = 70708004640. Its totient is φ = 6216088224.

The previous prime is 23310331001. The next prime is 23310331021. The reversal of 23310331020 is 2013301332.

23310331020 is a `hidden beast` number, since 2 + 3 + 310 + 331 + 0 + 20 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 23310330984 and 23310331002.

It is not an unprimeable number, because it can be changed into a prime (23310331021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 64750740 + ... + 64751099.

It is an arithmetic number, because the mean of its divisors is an integer number (1964111240).

Almost surely, 223310331020 is an apocalyptic number.

23310331020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23310331020 is an abundant number, since it is smaller than the sum of its proper divisors (47397673620).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

23310331020 is a wasteful number, since it uses less digits than its factorization.

23310331020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 129501854 (or 129501849 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 18.

Adding to 23310331020 its reverse (2013301332), we get a palindrome (25323632352).

The spelling of 23310331020 in words is "twenty-three billion, three hundred ten million, three hundred thirty-one thousand, twenty".

Divisors: 1 2 3 4 5 6 9 10 12 15 18 20 30 36 45 60 90 180 129501839 259003678 388505517 518007356 647509195 777011034 1165516551 1295018390 1554022068 1942527585 2331033102 2590036780 3885055170 4662066204 5827582755 7770110340 11655165510 23310331020