10123130121531 has 64 divisors (see below), whose sum is σ = 16366392299520. Its totient is φ = 5433290956800.

The previous prime is 10123130121523. The next prime is 10123130121557. The reversal of 10123130121531 is 13512103132101.

It is not a de Polignac number, because 10123130121531 - 2³ = 10123130121523 is a prime.

It is a super-2 number, since 2×10123130121531² (a number of 27 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (10123130121521) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 425311831 + ... + 425335631.

It is an arithmetic number, because the mean of its divisors is an integer number (255724879680).

Almost surely, 2^{10123130121531} is an apocalyptic number.

10123130121531 is a deficient number, since it is larger than the sum of its proper divisors (6243262177989).

10123130121531 is a wasteful number, since it uses less digits than its factorization.

10123130121531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26204.

The product of its (nonzero) digits is 540, while the sum is 24.

Adding to 10123130121531 its reverse (13512103132101), we get a palindrome (23635233253632).

The spelling of 10123130121531 in words is "ten trillion, one hundred twenty-three billion, one hundred thirty million, one hundred twenty-one thousand, five hundred thirty-one".