404161031 has 2 divisors, whose sum is σ = 404161032. Its totient is φ = 404161030.

The previous prime is 404161007. The next prime is 404161049. The reversal of 404161031 is 130161404.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 404161031 - 2¹⁰ = 404160007 is a prime.

It is a super-2 number, since 2×404161031² = 326692277957965922, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 404160994 and 404161012.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (404161001) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 202080515 + 202080516.

It is an arithmetic number, because the mean of its divisors is an integer number (202080516).

Almost surely, 2^404161031 is an apocalyptic number.

404161031 is a deficient number, since it is larger than the sum of its proper divisors (1).

404161031 is an equidigital number, since it uses as much as digits as its factorization.

404161031 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 288, while the sum is 20.

The square root of 404161031 is about 20103.7566389966. The cubic root of 404161031 is about 739.3523862891.

The spelling of 404161031 in words is "four hundred four million, one hundred sixty-one thousand, thirty-one".