31890414663 has 80 divisors (see below), whose sum is σ = 52351356640. Its totient is φ = 19273593600.

The previous prime is 31890414653. The next prime is 31890414679. The reversal of 31890414663 is 36641409813.

31890414663 is a `hidden beast` number, since 3 + 189 + 0 + 4 + 1 + 466 + 3 = 666.

It is not a de Polignac number, because 31890414663 - 2¹² = 31890410567 is a prime.

It is a super-4 number, since 4×31890414663⁴ (a number of 43 digits) contains 4444 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31890414623) by changing a digit.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 3468933 + ... + 3478113.

It is an arithmetic number, because the mean of its divisors is an integer number (654391958).

Almost surely, 2^31890414663 is an apocalyptic number.

31890414663 is a deficient number, since it is larger than the sum of its proper divisors (20460941977).

31890414663 is a wasteful number, since it uses less digits than its factorization.

31890414663 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9310 (or 9301 counting only the distinct ones).

The product of its (nonzero) digits is 373248, while the sum is 45.

The spelling of 31890414663 in words is "thirty-one billion, eight hundred ninety million, four hundred fourteen thousand, six hundred sixty-three".