12047377931 has 2 divisors, whose sum is σ = 12047377932. Its totient is φ = 12047377930.

The previous prime is 12047377891. The next prime is 12047377987. The reversal of 12047377931 is 13977374021.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12047377931 is a prime.

It is a super-2 number, since 2×12047377931² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (12047377831) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6023688965 + 6023688966.

It is an arithmetic number, because the mean of its divisors is an integer number (6023688966).

Almost surely, 2^12047377931 is an apocalyptic number.

12047377931 is a deficient number, since it is larger than the sum of its proper divisors (1).

12047377931 is an equidigital number, since it uses as much as digits as its factorization.

12047377931 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 222264, while the sum is 44.

The spelling of 12047377931 in words is "twelve billion, forty-seven million, three hundred seventy-seven thousand, nine hundred thirty-one".