404113631 has 2 divisors, whose sum is σ = 404113632. Its totient is φ = 404113630.

The previous prime is 404113607. The next prime is 404113639. The reversal of 404113631 is 136311404.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 404113631 - 2¹⁰ = 404112607 is a prime.

It is a super-2 number, since 2×404113631² = 326615653520008322, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 404113597 and 404113606.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (404113639) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 202056815 + 202056816.

It is an arithmetic number, because the mean of its divisors is an integer number (202056816).

Almost surely, 2^404113631 is an apocalyptic number.

404113631 is a deficient number, since it is larger than the sum of its proper divisors (1).

404113631 is an equidigital number, since it uses as much as digits as its factorization.

404113631 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 864, while the sum is 23.

The square root of 404113631 is about 20102.5777202825. The cubic root of 404113631 is about 739.3234814133.

The spelling of 404113631 in words is "four hundred four million, one hundred thirteen thousand, six hundred thirty-one".