31275474630913 has 2 divisors, whose sum is σ = 31275474630914. Its totient is φ = 31275474630912.

The previous prime is 31275474630893. The next prime is 31275474630937. The reversal of 31275474630913 is 31903647457213.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 29611315290384 + 1664159340529 = 5441628^2 + 1290023^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-31275474630913 is a prime.

It is not a weakly prime, because it can be changed into another prime (31275474630943) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15637737315456 + 15637737315457.

It is an arithmetic number, because the mean of its divisors is an integer number (15637737315457).

Almost surely, 2^{31275474630913} is an apocalyptic number.

It is an amenable number.

31275474630913 is a deficient number, since it is larger than the sum of its proper divisors (1).

31275474630913 is an equidigital number, since it uses as much as digits as its factorization.

31275474630913 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 11430720, while the sum is 55.

The spelling of 31275474630913 in words is "thirty-one trillion, two hundred seventy-five billion, four hundred seventy-four million, six hundred thirty thousand, nine hundred thirteen".