4013631 has 24 divisors (see below), whose sum is σ = 6115200. Its totient is φ = 2630232.

The previous prime is 4013623. The next prime is 4013641. The reversal of 4013631 is 1363104.

It is not a de Polignac number, because 4013631 - 2³ = 4013623 is a prime.

It is a super-2 number, since 2×4013631² = 32218467608322, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4013621) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 20070 + ... + 20268.

It is an arithmetic number, because the mean of its divisors is an integer number (254800).

Almost surely, 2^4013631 is an apocalyptic number.

4013631 is a deficient number, since it is larger than the sum of its proper divisors (2101569).

4013631 is an equidigital number, since it uses as much as digits as its factorization.

4013631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 297 (or 285 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

The square root of 4013631 is about 2003.4048517461. The cubic root of 4013631 is about 158.9202162915.

Adding to 4013631 its reverse (1363104), we get a palindrome (5376735).

The spelling of 4013631 in words is "four million, thirteen thousand, six hundred thirty-one".