31030113400 has 288 divisors, whose sum is σ = 87657670800. Its totient is φ = 10070784000.

The previous prime is 31030113391. The next prime is 31030113449. The reversal of 31030113400 is 431103013.

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 71 ways as a sum of consecutive naturals, for example, 27484036 + ... + 27485164.

Almost surely, 2^31030113400 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 31030113400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (43828835400).

31030113400 is an abundant number, since it is smaller than the sum of its proper divisors (56627557400).

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

31030113400 is a wasteful number, since it uses less digits than its factorization.

31030113400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1231 (or 1191 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 16.

Adding to 31030113400 its reverse (431103013), we get a palindrome (31461216413).

The spelling of 31030113400 in words is "thirty-one billion, thirty million, one hundred thirteen thousand, four hundred".