31312122486929 has 2 divisors, whose sum is σ = 31312122486930. Its totient is φ = 31312122486928.

The previous prime is 31312122486923. The next prime is 31312122486949. The reversal of 31312122486929 is 92968422121313.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 31036854371329 + 275268115600 = 5571073^2 + 524660^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-31312122486929 is a prime.

It is not a weakly prime, because it can be changed into another prime (31312122486923) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15656061243464 + 15656061243465.

It is an arithmetic number, because the mean of its divisors is an integer number (15656061243465).

Almost surely, 2^{31312122486929} is an apocalyptic number.

It is an amenable number.

31312122486929 is a deficient number, since it is larger than the sum of its proper divisors (1).

31312122486929 is an equidigital number, since it uses as much as digits as its factorization.

31312122486929 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2239488, while the sum is 53.

The spelling of 31312122486929 in words is "thirty-one trillion, three hundred twelve billion, one hundred twenty-two million, four hundred eighty-six thousand, nine hundred twenty-nine".