123202101931 has 2 divisors, whose sum is σ = 123202101932. Its totient is φ = 123202101930.

The previous prime is 123202101823. The next prime is 123202101949. The reversal of 123202101931 is 139101202321.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 123202101931 - 2³⁵ = 88842363563 is a prime.

It is a super-2 number, since 2×123202101931² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 123202101896 and 123202101905.

It is not a weakly prime, because it can be changed into another prime (123202161931) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61601050965 + 61601050966.

It is an arithmetic number, because the mean of its divisors is an integer number (61601050966).

Almost surely, 2^123202101931 is an apocalyptic number.

123202101931 is a deficient number, since it is larger than the sum of its proper divisors (1).

123202101931 is an equidigital number, since it uses as much as digits as its factorization.

123202101931 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 648, while the sum is 25.

The spelling of 123202101931 in words is "one hundred twenty-three billion, two hundred two million, one hundred one thousand, nine hundred thirty-one".