631319125 has 16 divisors (see below), whose sum is σ = 815059440. Its totient is φ = 487636800.

The previous prime is 631319119. The next prime is 631319167. The reversal of 631319125 is 521913136.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 298840369 + 332478756 = 17287^2 + 18234^2 .

It is a de Polignac number, because none of the positive numbers 2^k-631319125 is a prime.

It is a super-3 number, since 3×631319125³ (a number of 27 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 83454 + ... + 90703.

It is an arithmetic number, because the mean of its divisors is an integer number (50941215).

Almost surely, 2^631319125 is an apocalyptic number.

It is an amenable number.

631319125 is a deficient number, since it is larger than the sum of its proper divisors (183740315).

631319125 is a wasteful number, since it uses less digits than its factorization.

631319125 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 174201 (or 174191 counting only the distinct ones).

The product of its digits is 4860, while the sum is 31.

The square root of 631319125 is about 25126.0646540599. The cubic root of 631319125 is about 857.8597968233.

The spelling of 631319125 in words is "six hundred thirty-one million, three hundred nineteen thousand, one hundred twenty-five".