63320631 has 48 divisors (see below), whose sum is σ = 101735424. Its totient is φ = 34848000.

The previous prime is 63320611. The next prime is 63320651. The reversal of 63320631 is 13602336.

63320631 is a nontrivial binomial coefficient, being equal to C(11254, 2).

It is an interprime number because it is at equal distance from previous prime (63320611) and next prime (63320651).

It is not a de Polignac number, because 63320631 - 2¹⁴ = 63304247 is a prime.

It is a super-2 number, since 2×63320631² = 8019004620476322, which contains 22 as substring.

It is a hoax number, since the sum of its digits (24) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63320611) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 191136 + ... + 191466.

It is an arithmetic number, because the mean of its divisors is an integer number (2119488).

Almost surely, 2^63320631 is an apocalyptic number.

63320631 is the 11253-rd triangular number and also the 5627-th hexagonal number.

63320631 is a deficient number, since it is larger than the sum of its proper divisors (38414793).

63320631 is a wasteful number, since it uses less digits than its factorization.

63320631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 404 (or 393 counting only the distinct ones).

The product of its (nonzero) digits is 1944, while the sum is 24.

The square root of 63320631 is about 7957.4261542285. The cubic root of 63320631 is about 398.5796101182.

Adding to 63320631 its reverse (13602336), we get a palindrome (76922967).

The spelling of 63320631 in words is "sixty-three million, three hundred twenty thousand, six hundred thirty-one".