31516316742 has 16 divisors (see below), whose sum is σ = 63034456320. Its totient is φ = 10505135112.

The previous prime is 31516316731. The next prime is 31516316771. The reversal of 31516316742 is 24761361513.

It is a self number, because there is not a number n which added to its sum of digits gives 31516316742.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 270103 + ... + 368765.

It is an arithmetic number, because the mean of its divisors is an integer number (3939653520).

Almost surely, 2^31516316742 is an apocalyptic number.

31516316742 is an abundant number, since it is smaller than the sum of its proper divisors (31518139578).

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

31516316742 is a wasteful number, since it uses less digits than its factorization.

31516316742 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 151907.

The product of its digits is 90720, while the sum is 39.

The spelling of 31516316742 in words is "thirty-one billion, five hundred sixteen million, three hundred sixteen thousand, seven hundred forty-two".