631417938 has 16 divisors (see below), whose sum is σ = 1286663616. Its totient is φ = 206501360.

The previous prime is 631417933. The next prime is 631417973. The reversal of 631417938 is 839714136.

It is a super-2 number, since 2×631417938² = 797377224856343688, which contains 22 as substring.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 631417938.

It is not an unprimeable number, because it can be changed into a prime (631417931) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 992478 + ... + 993113.

It is an arithmetic number, because the mean of its divisors is an integer number (80416476).

Almost surely, 2^631417938 is an apocalyptic number.

631417938 is an abundant number, since it is smaller than the sum of its proper divisors (655245678).

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

631417938 is a wasteful number, since it uses less digits than its factorization.

631417938 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1985649.

The product of its digits is 108864, while the sum is 42.

The square root of 631417938 is about 25128.0309216620. The cubic root of 631417938 is about 857.9045514091.

The spelling of 631417938 in words is "six hundred thirty-one million, four hundred seventeen thousand, nine hundred thirty-eight".