631164250 has 64 divisors (see below), whose sum is σ = 1221816960. Its totient is φ = 243984000.

The previous prime is 631164221. The next prime is 631164271. The reversal of 631164250 is 52461136.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1424529 + ... + 1424971.

It is an arithmetic number, because the mean of its divisors is an integer number (19090890).

Almost surely, 2^631164250 is an apocalyptic number.

631164250 is a deficient number, since it is larger than the sum of its proper divisors (590652710).

631164250 is a wasteful number, since it uses less digits than its factorization.

631164250 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 640 (or 630 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 28.

The square root of 631164250 is about 25122.9825060640. The cubic root of 631164250 is about 857.7896411251.

The spelling of 631164250 in words is "six hundred thirty-one million, one hundred sixty-four thousand, two hundred fifty".