31701642740 has 12 divisors (see below), whose sum is σ = 66573449796. Its totient is φ = 12680657088.

The previous prime is 31701642703. The next prime is 31701642757. The reversal of 31701642740 is 4724610713.

It can be written as a sum of positive squares in 2 ways, for example, as 15979993744 + 15721648996 = 126412^2 + 125386^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 31701642740.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 792541049 + ... + 792541088.

It is an arithmetic number, because the mean of its divisors is an integer number (5547787483).

Almost surely, 2^31701642740 is an apocalyptic number.

It is an amenable number.

31701642740 is an abundant number, since it is smaller than the sum of its proper divisors (34871807056).

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

31701642740 is a wasteful number, since it uses less digits than its factorization.

31701642740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1585082146 (or 1585082144 counting only the distinct ones).

The product of its (nonzero) digits is 28224, while the sum is 35.

The spelling of 31701642740 in words is "thirty-one billion, seven hundred one million, six hundred forty-two thousand, seven hundred forty".