125202431831 has 2 divisors, whose sum is σ = 125202431832. Its totient is φ = 125202431830.

The previous prime is 125202431821. The next prime is 125202431881. The reversal of 125202431831 is 138134202521.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-125202431831 is a prime.

It is a super-2 number, since 2×125202431831² (a number of 23 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (125202431821) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 62601215915 + 62601215916.

It is an arithmetic number, because the mean of its divisors is an integer number (62601215916).

Almost surely, 2^125202431831 is an apocalyptic number.

125202431831 is a deficient number, since it is larger than the sum of its proper divisors (1).

125202431831 is an equidigital number, since it uses as much as digits as its factorization.

125202431831 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 11520, while the sum is 32.

The spelling of 125202431831 in words is "one hundred twenty-five billion, two hundred two million, four hundred thirty-one thousand, eight hundred thirty-one".