31355466455057 has 2 divisors, whose sum is σ = 31355466455058. Its totient is φ = 31355466455056.

The previous prime is 31355466455023. The next prime is 31355466455077. The reversal of 31355466455057 is 75055466455313.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 24484693136401 + 6870773318656 = 4948201^2 + 2621216^2 .

It is a cyclic number.

It is not a de Polignac number, because 31355466455057 - 2²⁴ = 31355449677841 is a prime.

It is a super-2 number, since 2×31355466455057² (a number of 28 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 31355466454987 and 31355466455005.

It is not a weakly prime, because it can be changed into another prime (31355466455077) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15677733227528 + 15677733227529.

It is an arithmetic number, because the mean of its divisors is an integer number (15677733227529).

Almost surely, 2^{31355466455057} is an apocalyptic number.

It is an amenable number.

31355466455057 is a deficient number, since it is larger than the sum of its proper divisors (1).

31355466455057 is an equidigital number, since it uses as much as digits as its factorization.

31355466455057 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 113400000, while the sum is 59.

The spelling of 31355466455057 in words is "thirty-one trillion, three hundred fifty-five billion, four hundred sixty-six million, four hundred fifty-five thousand, fifty-seven".