31338732916 has 6 divisors (see below), whose sum is σ = 54842782610. Its totient is φ = 15669366456.

The previous prime is 31338732907. The next prime is 31338732923. The reversal of 31338732916 is 61923783313.

It can be written as a sum of positive squares in only one way, i.e., 30413964816 + 924768100 = 174396^2 + 30410^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3917341611 + ... + 3917341618.

Almost surely, 2^31338732916 is an apocalyptic number.

It is an amenable number.

31338732916 is a deficient number, since it is larger than the sum of its proper divisors (23504049694).

31338732916 is a wasteful number, since it uses less digits than its factorization.

31338732916 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7834683233 (or 7834683231 counting only the distinct ones).

The product of its digits is 489888, while the sum is 46.

The spelling of 31338732916 in words is "thirty-one billion, three hundred thirty-eight million, seven hundred thirty-two thousand, nine hundred sixteen".