31020863480 has 32 divisors (see below), whose sum is σ = 70004085840. Its totient is φ = 12371520000.

The previous prime is 31020863459. The next prime is 31020863537. The reversal of 31020863480 is 8436802013.

It is a happy number.

It is a zygodrome in base 2.

It is a self number, because there is not a number n which added to its sum of digits gives 31020863480.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1137146 + ... + 1164105.

Almost surely, 2^31020863480 is an apocalyptic number.

It is an amenable number.

31020863480 is an abundant number, since it is smaller than the sum of its proper divisors (38983222360).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

31020863480 is a wasteful number, since it uses less digits than its factorization.

31020863480 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2301599 (or 2301595 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 35.

The spelling of 31020863480 in words is "thirty-one billion, twenty million, eight hundred sixty-three thousand, four hundred eighty".