31400437684 has 24 divisors (see below), whose sum is σ = 68510046528. Its totient is φ = 12233936640.

The previous prime is 31400437589. The next prime is 31400437687. The reversal of 31400437684 is 48673400413.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31400437687) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 50974429 + ... + 50975044.

It is an arithmetic number, because the mean of its divisors is an integer number (2854585272).

Almost surely, 2^31400437684 is an apocalyptic number.

It is an amenable number.

31400437684 is an abundant number, since it is smaller than the sum of its proper divisors (37109608844).

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

31400437684 is a wasteful number, since it uses less digits than its factorization.

31400437684 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 101949495 (or 101949493 counting only the distinct ones).

The product of its (nonzero) digits is 193536, while the sum is 40.

The spelling of 31400437684 in words is "thirty-one billion, four hundred million, four hundred thirty-seven thousand, six hundred eighty-four".