31940810672040 has 48 divisors (see below), whose sum is σ = 103807634685300. Its totient is φ = 8517549512448.

The previous prime is 31940810672021. The next prime is 31940810672093. The reversal of 31940810672040 is 4027601804913.

31940810672040 is a `hidden beast` number, since 31 + 9 + 408 + 1 + 0 + 6 + 7 + 204 + 0 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 30427954951716 + 1512855720324 = 5516154^2 + 1229982^2 .

It is a Harshad number since it is a multiple of its sum of digits (45).

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, 44362236685 + ... + 44362237404.

Almost surely, 2^{31940810672040} is an apocalyptic number.

31940810672040 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

31940810672040 is an abundant number, since it is smaller than the sum of its proper divisors (71866824013260).

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

31940810672040 is a wasteful number, since it uses less digits than its factorization.

31940810672040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 88724474106 (or 88724474099 counting only the distinct ones).

The product of its (nonzero) digits is 290304, while the sum is 45.

The spelling of 31940810672040 in words is "thirty-one trillion, nine hundred forty billion, eight hundred ten million, six hundred seventy-two thousand, forty".