31320120022057 has 2 divisors, whose sum is σ = 31320120022058. Its totient is φ = 31320120022056.

The previous prime is 31320120022021. The next prime is 31320120022067. The reversal of 31320120022057 is 75022002102313.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 31167253879696 + 152866142361 = 5582764^2 + 390981^2 .

It is a cyclic number.

It is not a de Polignac number, because 31320120022057 - 2⁷ = 31320120021929 is a prime.

It is a super-2 number, since 2×31320120022057² (a number of 28 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (31320120022067) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15660060011028 + 15660060011029.

It is an arithmetic number, because the mean of its divisors is an integer number (15660060011029).

Almost surely, 2^{31320120022057} is an apocalyptic number.

It is an amenable number.

31320120022057 is a deficient number, since it is larger than the sum of its proper divisors (1).

31320120022057 is an equidigital number, since it uses as much as digits as its factorization.

31320120022057 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5040, while the sum is 28.

The spelling of 31320120022057 in words is "thirty-one trillion, three hundred twenty billion, one hundred twenty million, twenty-two thousand, fifty-seven".