31465734440 has 32 divisors (see below), whose sum is σ = 80911889280. Its totient is φ = 10788251712.

The previous prime is 31465734437. The next prime is 31465734457. The reversal of 31465734440 is 4443756413.

It is a happy number.

It is a super-2 number, since 2×31465734440² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 56188532 + ... + 56189091.

It is an arithmetic number, because the mean of its divisors is an integer number (2528496540).

Almost surely, 2^31465734440 is an apocalyptic number.

It is an amenable number.

31465734440 is an abundant number, since it is smaller than the sum of its proper divisors (49446154840).

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

31465734440 is a wasteful number, since it uses less digits than its factorization.

31465734440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 112377641 (or 112377637 counting only the distinct ones).

The product of its (nonzero) digits is 483840, while the sum is 41.

The spelling of 31465734440 in words is "thirty-one billion, four hundred sixty-five million, seven hundred thirty-four thousand, four hundred forty".