31070612857 has 2 divisors, whose sum is σ = 31070612858. Its totient is φ = 31070612856.

The previous prime is 31070612821. The next prime is 31070612869. The reversal of 31070612857 is 75821607013.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 18161335696 + 12909277161 = 134764^2 + 113619^2 .

It is a cyclic number.

It is not a de Polignac number, because 31070612857 - 2¹⁵ = 31070580089 is a prime.

It is not a weakly prime, because it can be changed into another prime (31070612257) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15535306428 + 15535306429.

It is an arithmetic number, because the mean of its divisors is an integer number (15535306429).

Almost surely, 2^31070612857 is an apocalyptic number.

It is an amenable number.

31070612857 is a deficient number, since it is larger than the sum of its proper divisors (1).

31070612857 is an equidigital number, since it uses as much as digits as its factorization.

31070612857 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 70560, while the sum is 40.

The spelling of 31070612857 in words is "thirty-one billion, seventy million, six hundred twelve thousand, eight hundred fifty-seven".