404350031 has 2 divisors, whose sum is σ = 404350032. Its totient is φ = 404350030.

The previous prime is 404350003. The next prime is 404350033. The reversal of 404350031 is 130053404.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 404350031 - 2²² = 400155727 is a prime.

It is a super-2 number, since 2×404350031² = 326997895139401922, which contains 22 as substring.

Together with 404350033, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 404349985 and 404350012.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (404350033) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 202175015 + 202175016.

It is an arithmetic number, because the mean of its divisors is an integer number (202175016).

Almost surely, 2^404350031 is an apocalyptic number.

404350031 is a deficient number, since it is larger than the sum of its proper divisors (1).

404350031 is an equidigital number, since it uses as much as digits as its factorization.

404350031 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 720, while the sum is 20.

The square root of 404350031 is about 20108.4567035862. The cubic root of 404350031 is about 739.4676174420.

The spelling of 404350031 in words is "four hundred four million, three hundred fifty thousand, thirty-one".