31308859072 has 56 divisors (see below), whose sum is σ = 65776906800. Its totient is φ = 14744687616.

The previous prime is 31308859067. The next prime is 31308859093. The reversal of 31308859072 is 27095880313.

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, 135954 + ... + 284782.

Almost surely, 2^31308859072 is an apocalyptic number.

31308859072 is a gapful number since it is divisible by the number (32) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 31308859072, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32888453400).

31308859072 is an abundant number, since it is smaller than the sum of its proper divisors (34468047728).

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

31308859072 is a wasteful number, since it uses less digits than its factorization.

31308859072 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 149033 (or 149023 counting only the distinct ones).

The product of its (nonzero) digits is 362880, while the sum is 46.

The spelling of 31308859072 in words is "thirty-one billion, three hundred eight million, eight hundred fifty-nine thousand, seventy-two".