31239498328 has 16 divisors (see below), whose sum is σ = 58629281760. Its totient is φ = 15605023200.

The previous prime is 31239498307. The next prime is 31239498347. The reversal of 31239498328 is 82389493213.

It is a super-2 number, since 2×31239498328² (a number of 22 digits) contains 22 as substring.

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, 1831728 + ... + 1848703.

It is an arithmetic number, because the mean of its divisors is an integer number (3664330110).

Almost surely, 2^31239498328 is an apocalyptic number.

It is an amenable number.

31239498328 is a deficient number, since it is larger than the sum of its proper divisors (27389783432).

31239498328 is a wasteful number, since it uses less digits than its factorization.

31239498328 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3681498 (or 3681494 counting only the distinct ones).

The product of its digits is 2239488, while the sum is 52.

The spelling of 31239498328 in words is "thirty-one billion, two hundred thirty-nine million, four hundred ninety-eight thousand, three hundred twenty-eight".