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1010231020 = 225257196543
BaseRepresentation
bin111100001101101…
…110011011101100
32121101221001102201
4330031232123230
54032104343040
6244124431244
734014551641
oct7415563354
92541831381
101010231020
11479281577
122423a8524
131313acc46
1498251dc8
155da52a9a
hex3c36e6ec

1010231020 has 24 divisors (see below), whose sum is σ = 2129750784. Its totient is φ = 402518016.

The previous prime is 1010231009. The next prime is 1010231023. The reversal of 1010231020 is 201320101.

It is a Harshad number since it is a multiple of its sum of digits (10).

It is a junction number, because it is equal to n+sod(n) for n = 1010230988 and 1010231006.

It is not an unprimeable number, because it can be changed into a prime (1010231023) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 93132 + ... + 103411.

It is an arithmetic number, because the mean of its divisors is an integer number (88739616).

Almost surely, 21010231020 is an apocalyptic number.

1010231020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1010231020 is an abundant number, since it is smaller than the sum of its proper divisors (1119519764).

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

1010231020 is a wasteful number, since it uses less digits than its factorization.

1010231020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 196809 (or 196807 counting only the distinct ones).

The product of its (nonzero) digits is 12, while the sum is 10.

The square root of 1010231020 is about 31784.1315753632. The cubic root of 1010231020 is about 1003.3987752397.

Adding to 1010231020 its reverse (201320101), we get a palindrome (1211551121).

The spelling of 1010231020 in words is "one billion, ten million, two hundred thirty-one thousand, twenty".

Divisors: 1 2 4 5 10 20 257 514 1028 1285 2570 5140 196543 393086 786172 982715 1965430 3930860 50511551 101023102 202046204 252557755 505115510 1010231020