631125200 has 30 divisors (see below), whose sum is σ = 1516279254. Its totient is φ = 252449920.

The previous prime is 631125197. The next prime is 631125211. The reversal of 631125200 is 2521136.

It can be written as a sum of positive squares in 3 ways, for example, as 512656 + 630612544 = 716^2 + 25112^2 .

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 788507 + ... + 789306.

Almost surely, 2^631125200 is an apocalyptic number.

It is an amenable number.

631125200 is an abundant number, since it is smaller than the sum of its proper divisors (885154054).

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

631125200 is a wasteful number, since it uses less digits than its factorization.

631125200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1577831 (or 1577820 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 20.

The square root of 631125200 is about 25122.2053172089. The cubic root of 631125200 is about 857.7719503384.

Adding to 631125200 its reverse (2521136), we get a palindrome (633646336).

The spelling of 631125200 in words is "six hundred thirty-one million, one hundred twenty-five thousand, two hundred".