31756414402481 has 2 divisors, whose sum is σ = 31756414402482. Its totient is φ = 31756414402480.

The previous prime is 31756414402331. The next prime is 31756414402567. The reversal of 31756414402481 is 18420441465713.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 31749179198881 + 7235203600 = 5634641^2 + 85060^2 .

It is a cyclic number.

It is not a de Polignac number, because 31756414402481 - 2¹⁰ = 31756414401457 is a prime.

It is a super-2 number, since 2×31756414402481² (a number of 28 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (31756414902481) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15878207201240 + 15878207201241.

It is an arithmetic number, because the mean of its divisors is an integer number (15878207201241).

Almost surely, 2^{31756414402481} is an apocalyptic number.

It is an amenable number.

31756414402481 is a deficient number, since it is larger than the sum of its proper divisors (1).

31756414402481 is an equidigital number, since it uses as much as digits as its factorization.

31756414402481 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2580480, while the sum is 50.

The spelling of 31756414402481 in words is "thirty-one trillion, seven hundred fifty-six billion, four hundred fourteen million, four hundred two thousand, four hundred eighty-one".