404111023 has 2 divisors, whose sum is σ = 404111024. Its totient is φ = 404111022.

The previous prime is 404110957. The next prime is 404111041. The reversal of 404111023 is 320111404.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-404111023 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 404110988 and 404111006.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (404111053) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 202055511 + 202055512.

It is an arithmetic number, because the mean of its divisors is an integer number (202055512).

Almost surely, 2^404111023 is an apocalyptic number.

404111023 is a deficient number, since it is larger than the sum of its proper divisors (1).

404111023 is an equidigital number, since it uses as much as digits as its factorization.

404111023 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 96, while the sum is 16.

The square root of 404111023 is about 20102.5128528749. The cubic root of 404111023 is about 739.3218909697.

Adding to 404111023 its reverse (320111404), we get a palindrome (724222427).

The spelling of 404111023 in words is "four hundred four million, one hundred eleven thousand, twenty-three".