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10020123131 = 53635329759
BaseRepresentation
bin10010101010011111…
…01111000111111011
3221212022121222212112
421111033233013323
5131010122420011
64334142002535
7503210432654
oct112517570773
927768558775
1010020123131
1142821098a7
121b3787644b
13c38c14955
146b0ac052b
153d9a3558b
hex2553ef1fb

10020123131 has 8 divisors (see below), whose sum is σ = 10211132160. Its totient is φ = 9829186432.

The previous prime is 10020123107. The next prime is 10020123137. The reversal of 10020123131 is 13132102001.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 10020123131 - 26 = 10020123067 is a prime.

It is a super-2 number, since 2×100201231312 (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (10020123137) 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, 321830 + ... + 351588.

It is an arithmetic number, because the mean of its divisors is an integer number (1276391520).

Almost surely, 210020123131 is an apocalyptic number.

10020123131 is a deficient number, since it is larger than the sum of its proper divisors (191009029).

10020123131 is an equidigital number, since it uses as much as digits as its factorization.

10020123131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36165.

The product of its (nonzero) digits is 36, while the sum is 14.

Adding to 10020123131 its reverse (13132102001), we get a palindrome (23152225132).

The spelling of 10020123131 in words is "ten billion, twenty million, one hundred twenty-three thousand, one hundred thirty-one".

Divisors: 1 53 6353 29759 336709 1577227 189058927 10020123131