31013355504 has 80 divisors (see below), whose sum is σ = 82578714624. Its totient is φ = 10025030400.

The previous prime is 31013355491. The next prime is 31013355533. The reversal of 31013355504 is 40555331013.

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, 133297 + ... + 282479.

Almost surely, 2^31013355504 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 31013355504, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (41289357312).

31013355504 is an abundant number, since it is smaller than the sum of its proper divisors (51565359120).

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

31013355504 is a wasteful number, since it uses less digits than its factorization.

31013355504 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 149326 (or 149320 counting only the distinct ones).

The product of its (nonzero) digits is 13500, while the sum is 30.

Adding to 31013355504 its reverse (40555331013), we get a palindrome (71568686517).

The spelling of 31013355504 in words is "thirty-one billion, thirteen million, three hundred fifty-five thousand, five hundred four".