126512703931 has 2 divisors, whose sum is σ = 126512703932. Its totient is φ = 126512703930.

The previous prime is 126512703923. The next prime is 126512703959. The reversal of 126512703931 is 139307215621.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 126512703931 - 2³ = 126512703923 is a prime.

It is a super-2 number, since 2×126512703931² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (126512703991) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 63256351965 + 63256351966.

It is an arithmetic number, because the mean of its divisors is an integer number (63256351966).

Almost surely, 2^126512703931 is an apocalyptic number.

126512703931 is a deficient number, since it is larger than the sum of its proper divisors (1).

126512703931 is an equidigital number, since it uses as much as digits as its factorization.

126512703931 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 68040, while the sum is 40.

The spelling of 126512703931 in words is "one hundred twenty-six billion, five hundred twelve million, seven hundred three thousand, nine hundred thirty-one".