31404400100 has 72 divisors (see below), whose sum is σ = 71537171328. Its totient is φ = 11943500800.

The previous prime is 31404400081. The next prime is 31404400163. The reversal of 31404400100 is 100440413.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 343220 + ... + 424980.

It is an arithmetic number, because the mean of its divisors is an integer number (993571824).

Almost surely, 2^31404400100 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 31404400100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (35768585664).

31404400100 is an abundant number, since it is smaller than the sum of its proper divisors (40132771228).

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

31404400100 is a wasteful number, since it uses less digits than its factorization.

31404400100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81965 (or 81958 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 17.

Adding to 31404400100 its reverse (100440413), we get a palindrome (31504840513).

The spelling of 31404400100 in words is "thirty-one billion, four hundred four million, four hundred thousand, one hundred".