31400244200 has 48 divisors (see below), whose sum is σ = 78621387180. Its totient is φ = 11593935360.

The previous prime is 31400244199. The next prime is 31400244221. The reversal of 31400244200 is 244200413.

It can be written as a sum of positive squares in 6 ways, for example, as 1212571684 + 30187672516 = 34822^2 + 173746^2 .

It is a Harshad number since it is a multiple of its sum of digits (20).

31400244200 is a modest number, since divided by 244200 gives 31400 as remainder.

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, 6035909 + ... + 6041108.

Almost surely, 2^31400244200 is an apocalyptic number.

It is an amenable number.

31400244200 is an abundant number, since it is smaller than the sum of its proper divisors (47221142980).

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

31400244200 is a wasteful number, since it uses less digits than its factorization.

31400244200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12077046 (or 12077037 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 20.

Adding to 31400244200 its reverse (244200413), we get a palindrome (31644444613).

The spelling of 31400244200 in words is "thirty-one billion, four hundred million, two hundred forty-four thousand, two hundred".