31499268242 has 16 divisors (see below), whose sum is σ = 51254851032. Its totient is φ = 14432004480.

The previous prime is 31499268239. The next prime is 31499268271. The reversal of 31499268242 is 24286299413.

It can be written as a sum of positive squares in 4 ways, for example, as 13605122881 + 17894145361 = 116641^2 + 133769^2 .

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, 4418009 + ... + 4425132.

Almost surely, 2^31499268242 is an apocalyptic number.

31499268242 is a deficient number, since it is larger than the sum of its proper divisors (19755582790).

31499268242 is a wasteful number, since it uses less digits than its factorization.

31499268242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8843293.

The product of its digits is 1492992, while the sum is 50.

The spelling of 31499268242 in words is "thirty-one billion, four hundred ninety-nine million, two hundred sixty-eight thousand, two hundred forty-two".