31303331057 has 2 divisors, whose sum is σ = 31303331058. Its totient is φ = 31303331056.

The previous prime is 31303331051. The next prime is 31303331141. The reversal of 31303331057 is 75013330313.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 27444560896 + 3858770161 = 165664^2 + 62119^2 .

It is a cyclic number.

It is not a de Polignac number, because 31303331057 - 2¹⁰ = 31303330033 is a prime.

It is not a weakly prime, because it can be changed into another prime (31303331051) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15651665528 + 15651665529.

It is an arithmetic number, because the mean of its divisors is an integer number (15651665529).

Almost surely, 2^31303331057 is an apocalyptic number.

It is an amenable number.

31303331057 is a deficient number, since it is larger than the sum of its proper divisors (1).

31303331057 is an equidigital number, since it uses as much as digits as its factorization.

31303331057 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8505, while the sum is 29.

The spelling of 31303331057 in words is "thirty-one billion, three hundred three million, three hundred thirty-one thousand, fifty-seven".