31439814042 has 96 divisors (see below), whose sum is σ = 83406117312. Its totient is φ = 7804048896.

The previous prime is 31439813963. The next prime is 31439814061. The reversal of 31439814042 is 24041893413.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 176968 + ... + 306915.

It is an arithmetic number, because the mean of its divisors is an integer number (868813722).

Almost surely, 2^31439814042 is an apocalyptic number.

31439814042 is an abundant number, since it is smaller than the sum of its proper divisors (51966303270).

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

31439814042 is a wasteful number, since it uses less digits than its factorization.

31439814042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 483932 (or 483925 counting only the distinct ones).

The product of its (nonzero) digits is 82944, while the sum is 39.

The spelling of 31439814042 in words is "thirty-one billion, four hundred thirty-nine million, eight hundred fourteen thousand, forty-two".