31486266872 has 8 divisors (see below), whose sum is σ = 59036750400. Its totient is φ = 15743133432.

The previous prime is 31486266863. The next prime is 31486266887. The reversal of 31486266872 is 27866268413.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1967891672 + ... + 1967891687.

It is an arithmetic number, because the mean of its divisors is an integer number (7379593800).

Almost surely, 2^31486266872 is an apocalyptic number.

It is an amenable number.

31486266872 is a deficient number, since it is larger than the sum of its proper divisors (27550483528).

31486266872 is a wasteful number, since it uses less digits than its factorization.

31486266872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3935783365 (or 3935783361 counting only the distinct ones).

The product of its digits is 4644864, while the sum is 53.

The spelling of 31486266872 in words is "thirty-one billion, four hundred eighty-six million, two hundred sixty-six thousand, eight hundred seventy-two".