631504413 has 12 divisors (see below), whose sum is σ = 925788448. Its totient is φ = 414718920.

The previous prime is 631504409. The next prime is 631504417. The reversal of 631504413 is 314405136.

It is an interprime number because it is at equal distance from previous prime (631504409) and next prime (631504417).

It is not a de Polignac number, because 631504413 - 2² = 631504409 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (631504417) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 523033 + ... + 524238.

Almost surely, 2^631504413 is an apocalyptic number.

It is an amenable number.

631504413 is a deficient number, since it is larger than the sum of its proper divisors (294284035).

631504413 is a wasteful number, since it uses less digits than its factorization.

631504413 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1047344 (or 1047341 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 27.

The square root of 631504413 is about 25129.7515507018. The cubic root of 631504413 is about 857.9437140118.

Adding to 631504413 its reverse (314405136), we get a palindrome (945909549).

The spelling of 631504413 in words is "six hundred thirty-one million, five hundred four thousand, four hundred thirteen".