31403805480 has 48 divisors (see below), whose sum is σ = 102062368980. Its totient is φ = 8374348032.

The previous prime is 31403805469. The next prime is 31403805497. The reversal of 31403805480 is 8450830413.

31403805480 is a `hidden beast` number, since 3 + 140 + 38 + 0 + 5 + 480 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 31203809316 + 199996164 = 176646^2 + 14142^2 .

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 43616037 + ... + 43616756.

Almost surely, 2^31403805480 is an apocalyptic number.

31403805480 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

31403805480 is an abundant number, since it is smaller than the sum of its proper divisors (70658563500).

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

31403805480 is a wasteful number, since it uses less digits than its factorization.

31403805480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87232810 (or 87232803 counting only the distinct ones).

The product of its (nonzero) digits is 46080, while the sum is 36.

The spelling of 31403805480 in words is "thirty-one billion, four hundred three million, eight hundred five thousand, four hundred eighty".