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23313323120 = 245291416539
BaseRepresentation
bin10101101101100101…
…010001010001110000
32020011202010112002212
4111231211101101300
5340221202314440
614413205231252
71453503656033
oct255545212160
966152115085
1023313323120
11998384379a
124627702528
132276c73269
1411b236d01a
15916aa1465
hex56d951470

23313323120 has 20 divisors (see below), whose sum is σ = 54203476440. Its totient is φ = 9325329216.

The previous prime is 23313323107. The next prime is 23313323123. The reversal of 23313323120 is 2132331332.

It is a tau number, because it is divible by the number of its divisors (20).

It is a super-2 number, since 2×233133231202 (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23313323123) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 145708190 + ... + 145708349.

It is an arithmetic number, because the mean of its divisors is an integer number (2710173822).

Almost surely, 223313323120 is an apocalyptic number.

23313323120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23313323120 is an abundant number, since it is smaller than the sum of its proper divisors (30890153320).

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

23313323120 is a wasteful number, since it uses less digits than its factorization.

23313323120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 291416552 (or 291416546 counting only the distinct ones).

The product of its (nonzero) digits is 1944, while the sum is 23.

Adding to 23313323120 its reverse (2132331332), we get a palindrome (25445654452).

The spelling of 23313323120 in words is "twenty-three billion, three hundred thirteen million, three hundred twenty-three thousand, one hundred twenty".

Divisors: 1 2 4 5 8 10 16 20 40 80 291416539 582833078 1165666156 1457082695 2331332312 2914165390 4662664624 5828330780 11656661560 23313323120