30431591904 has 144 divisors (see below), whose sum is σ = 93060793728. Its totient is φ = 8682041088.

The previous prime is 30431591903. The next prime is 30431591959. The reversal of 30431591904 is 40919513403.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30431591903) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3490719 + ... + 3499425.

It is an arithmetic number, because the mean of its divisors is an integer number (646255512).

Almost surely, 2^30431591904 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 30431591904, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (46530396864).

30431591904 is an abundant number, since it is smaller than the sum of its proper divisors (62629201824).

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

30431591904 is a wasteful number, since it uses less digits than its factorization.

30431591904 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9477 (or 9462 counting only the distinct ones).

The product of its (nonzero) digits is 58320, while the sum is 39.

The spelling of 30431591904 in words is "thirty billion, four hundred thirty-one million, five hundred ninety-one thousand, nine hundred four".