123525000211031 has 4 divisors (see below), whose sum is σ = 124798453821552. Its totient is φ = 122251546600512.

The previous prime is 123525000211009. The next prime is 123525000211043. The reversal of 123525000211031 is 130112000525321.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-123525000211031 is a prime.

It is a super-2 number, since 2×123525000211031² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123525000211061) 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, 636726805115 + ... + 636726805308.

It is an arithmetic number, because the mean of its divisors is an integer number (31199613455388).

Almost surely, 2^{123525000211031} is an apocalyptic number.

123525000211031 is a deficient number, since it is larger than the sum of its proper divisors (1273453610521).

123525000211031 is an equidigital number, since it uses as much as digits as its factorization.

123525000211031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1273453610520.

The product of its (nonzero) digits is 1800, while the sum is 26.

Adding to 123525000211031 its reverse (130112000525321), we get a palindrome (253637000736352).

The spelling of 123525000211031 in words is "one hundred twenty-three trillion, five hundred twenty-five billion, two hundred eleven thousand, thirty-one".