631752130 has 32 divisors (see below), whose sum is σ = 1232060544. Its totient is φ = 232302336.

The previous prime is 631752127. The next prime is 631752157. The reversal of 631752130 is 31257136.

631752130 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×631752130² = 798221507519073800, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 35902 + ... + 50521.

It is an arithmetic number, because the mean of its divisors is an integer number (38501892).

Almost surely, 2^631752130 is an apocalyptic number.

631752130 is a deficient number, since it is larger than the sum of its proper divisors (600308414).

631752130 is a wasteful number, since it uses less digits than its factorization.

631752130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 86490.

The product of its (nonzero) digits is 3780, while the sum is 28.

The square root of 631752130 is about 25134.6798268846. The cubic root of 631752130 is about 858.0558797416.

The spelling of 631752130 in words is "six hundred thirty-one million, seven hundred fifty-two thousand, one hundred thirty".