31430425504 has 96 divisors (see below), whose sum is σ = 67102136640. Its totient is φ = 14458214400.

The previous prime is 31430425489. The next prime is 31430425511. The reversal of 31430425504 is 40552403413.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1626459 + ... + 1645669.

It is an arithmetic number, because the mean of its divisors is an integer number (698980590).

Almost surely, 2^31430425504 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 31430425504, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (33551068320).

31430425504 is an abundant number, since it is smaller than the sum of its proper divisors (35671711136).

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

31430425504 is a wasteful number, since it uses less digits than its factorization.

31430425504 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19334 (or 19326 counting only the distinct ones).

The product of its (nonzero) digits is 28800, while the sum is 31.

Adding to 31430425504 its reverse (40552403413), we get a palindrome (71982828917).

The spelling of 31430425504 in words is "thirty-one billion, four hundred thirty million, four hundred twenty-five thousand, five hundred four".