31439474852 has 6 divisors (see below), whose sum is σ = 55019080998. Its totient is φ = 15719737424.

The previous prime is 31439474851. The next prime is 31439474861. The reversal of 31439474852 is 25847493413.

It can be written as a sum of positive squares in only one way, i.e., 31153662016 + 285812836 = 176504^2 + 16906^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 31439474852.

It is not an unprimeable number, because it can be changed into a prime (31439474851) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3929934353 + ... + 3929934360.

It is an arithmetic number, because the mean of its divisors is an integer number (9169846833).

Almost surely, 2^31439474852 is an apocalyptic number.

It is an amenable number.

31439474852 is a deficient number, since it is larger than the sum of its proper divisors (23579606146).

31439474852 is a wasteful number, since it uses less digits than its factorization.

31439474852 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7859868717 (or 7859868715 counting only the distinct ones).

The product of its digits is 2903040, while the sum is 50.

The spelling of 31439474852 in words is "thirty-one billion, four hundred thirty-nine million, four hundred seventy-four thousand, eight hundred fifty-two".