31412779400 has 48 divisors (see below), whose sum is σ = 73046598900. Its totient is φ = 12563066880.

The previous prime is 31412779393. The next prime is 31412779421. The reversal of 31412779400 is 497721413.

It is a happy number.

It can be written as a sum of positive squares in 6 ways, for example, as 8884570564 + 22528208836 = 94258^2 + 150094^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2046956 + ... + 2062244.

Almost surely, 2^31412779400 is an apocalyptic number.

It is an amenable number.

31412779400 is an abundant number, since it is smaller than the sum of its proper divisors (41633819500).

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

31412779400 is a wasteful number, since it uses less digits than its factorization.

31412779400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25578 (or 25569 counting only the distinct ones).

The product of its (nonzero) digits is 42336, while the sum is 38.

The spelling of 31412779400 in words is "thirty-one billion, four hundred twelve million, seven hundred seventy-nine thousand, four hundred".