31700927742 has 32 divisors (see below), whose sum is σ = 69174134784. Its totient is φ = 9605164800.

The previous prime is 31700927729. The next prime is 31700927773. The reversal of 31700927742 is 24772900713.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 31700927694 and 31700927703.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 621678 + ... + 670734.

It is an arithmetic number, because the mean of its divisors is an integer number (2161691712).

Almost surely, 2^31700927742 is an apocalyptic number.

31700927742 is an abundant number, since it is smaller than the sum of its proper divisors (37473207042).

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

31700927742 is a wasteful number, since it uses less digits than its factorization.

31700927742 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58864.

The product of its (nonzero) digits is 148176, while the sum is 42.

The spelling of 31700927742 in words is "thirty-one billion, seven hundred million, nine hundred twenty-seven thousand, seven hundred forty-two".