12312031037 has 2 divisors, whose sum is σ = 12312031038. Its totient is φ = 12312031036.

The previous prime is 12312031001. The next prime is 12312031099. The reversal of 12312031037 is 73013021321.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8279908036 + 4032123001 = 90994^2 + 63499^2 .

It is a cyclic number.

It is not a de Polignac number, because 12312031037 - 2²² = 12307836733 is a prime.

It is a super-2 number, since 2×12312031037² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12312031937) 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, 6156015518 + 6156015519.

It is an arithmetic number, because the mean of its divisors is an integer number (6156015519).

Almost surely, 2^12312031037 is an apocalyptic number.

It is an amenable number.

12312031037 is a deficient number, since it is larger than the sum of its proper divisors (1).

12312031037 is an equidigital number, since it uses as much as digits as its factorization.

12312031037 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 756, while the sum is 23.

Adding to 12312031037 its reverse (73013021321), we get a palindrome (85325052358).

The spelling of 12312031037 in words is "twelve billion, three hundred twelve million, thirty-one thousand, thirty-seven".