631255902 has 16 divisors (see below), whose sum is σ = 1264470912. Its totient is φ = 210092120.

The previous prime is 631255897. The next prime is 631255939. The reversal of 631255902 is 209552136.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 77424 + ... + 85187.

It is an arithmetic number, because the mean of its divisors is an integer number (79029432).

Almost surely, 2^631255902 is an apocalyptic number.

631255902 is an abundant number, since it is smaller than the sum of its proper divisors (633215010).

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

631255902 is a wasteful number, since it uses less digits than its factorization.

631255902 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 163263.

The product of its (nonzero) digits is 16200, while the sum is 33.

The square root of 631255902 is about 25124.8065067176. The cubic root of 631255902 is about 857.8311592830.

The spelling of 631255902 in words is "six hundred thirty-one million, two hundred fifty-five thousand, nine hundred two".