63940131 has 8 divisors (see below), whose sum is σ = 94726160. Its totient is φ = 42626736.

The previous prime is 63940127. The next prime is 63940141. The reversal of 63940131 is 13104936.

It is not a de Polignac number, because 63940131 - 2² = 63940127 is a prime.

It is a super-2 number, since 2×63940131² = 8176680704594322, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 2368153 = 63940131 / (6 + 3 + 9 + 4 + 0 + 1 + 3 + 1).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 63940095 and 63940104.

It is not an unprimeable number, because it can be changed into a prime (63940141) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1184050 + ... + 1184103.

It is an arithmetic number, because the mean of its divisors is an integer number (11840770).

Almost surely, 2^63940131 is an apocalyptic number.

63940131 is a deficient number, since it is larger than the sum of its proper divisors (30786029).

63940131 is a wasteful number, since it uses less digits than its factorization.

63940131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2368162 (or 2368156 counting only the distinct ones).

The product of its (nonzero) digits is 1944, while the sum is 27.

The square root of 63940131 is about 7996.2573120179. The cubic root of 63940131 is about 399.8752340043.

The spelling of 63940131 in words is "sixty-three million, nine hundred forty thousand, one hundred thirty-one".