31755016955281 has 15 divisors (see below), whose sum is σ = 32458066931433. Its totient is φ = 31067195082900.

The previous prime is 31755016955237. The next prime is 31755016955293. The reversal of 31755016955281 is 18255961055713.

The square root of 31755016955281 is 5635159.

It is a perfect power (a square), and thus also a powerful number.

It is not a de Polignac number, because 31755016955281 - 2⁹ = 31755016954769 is a prime.

It is a super-2 number, since 2×31755016955281² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31755016955581) 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 in 14 ways as a sum of consecutive naturals, for example, 12448064956 + ... + 12448067506.

Almost surely, 2^{31755016955281} is an apocalyptic number.

31755016955281 is the 5635159-th square number.

31755016955281 is the 2817580-th centered octagonal number.

It is an amenable number.

31755016955281 is a deficient number, since it is larger than the sum of its proper divisors (703049976152).

31755016955281 is an frugal number, since it uses more digits than its factorization.

31755016955281 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5290 (or 2598 counting only the distinct ones).

The product of its (nonzero) digits is 11340000, while the sum is 58.

The spelling of 31755016955281 in words is "thirty-one trillion, seven hundred fifty-five billion, sixteen million, nine hundred fifty-five thousand, two hundred eighty-one".