12601611931 has 2 divisors, whose sum is σ = 12601611932. Its totient is φ = 12601611930.

The previous prime is 12601611907. The next prime is 12601611961. The reversal of 12601611931 is 13911610621.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 12601611931 - 2⁵ = 12601611899 is a prime.

It is a super-2 number, since 2×12601611931² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 12601611893 and 12601611902.

It is not a weakly prime, because it can be changed into another prime (12601611961) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6300805965 + 6300805966.

It is an arithmetic number, because the mean of its divisors is an integer number (6300805966).

Almost surely, 2^12601611931 is an apocalyptic number.

12601611931 is a deficient number, since it is larger than the sum of its proper divisors (1).

12601611931 is an equidigital number, since it uses as much as digits as its factorization.

12601611931 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1944, while the sum is 31.

The spelling of 12601611931 in words is "twelve billion, six hundred one million, six hundred eleven thousand, nine hundred thirty-one".