31340423200 has 36 divisors (see below), whose sum is σ = 76509810090. Its totient is φ = 12536168960.

The previous prime is 31340423173. The next prime is 31340423209. The reversal of 31340423200 is 232404313.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 29717622544 + 1622800656 = 172388^2 + 40284^2 .

It is not an unprimeable number, because it can be changed into a prime (31340423209) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 19586965 + ... + 19588564.

Almost surely, 2^31340423200 is an apocalyptic number.

It is an amenable number.

31340423200 is an abundant number, since it is smaller than the sum of its proper divisors (45169386890).

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

31340423200 is a wasteful number, since it uses less digits than its factorization.

31340423200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39175549 (or 39175536 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 22.

Adding to 31340423200 its reverse (232404313), we get a palindrome (31572827513).

The spelling of 31340423200 in words is "thirty-one billion, three hundred forty million, four hundred twenty-three thousand, two hundred".