63631431 has 12 divisors (see below), whose sum is σ = 92584752. Its totient is φ = 42110496.

The previous prime is 63631417. The next prime is 63631433. The reversal of 63631431 is 13413636.

It is not a de Polignac number, because 63631431 - 2¹⁰ = 63630407 is a prime.

It is a super-2 number, since 2×63631431² = 8097918022215522, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 63631395 and 63631404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63631433) 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, 24571 + ... + 27036.

It is an arithmetic number, because the mean of its divisors is an integer number (7715396).

Almost surely, 2^63631431 is an apocalyptic number.

63631431 is a deficient number, since it is larger than the sum of its proper divisors (28953321).

63631431 is a wasteful number, since it uses less digits than its factorization.

63631431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51750 (or 51747 counting only the distinct ones).

The product of its digits is 3888, while the sum is 27.

The square root of 63631431 is about 7976.9311768374. The cubic root of 63631431 is about 399.2306691906.

The spelling of 63631431 in words is "sixty-three million, six hundred thirty-one thousand, four hundred thirty-one".