404315123 has 2 divisors, whose sum is σ = 404315124. Its totient is φ = 404315122.

The previous prime is 404315101. The next prime is 404315147. The reversal of 404315123 is 321513404.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-404315123 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (404315173) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 202157561 + 202157562.

It is an arithmetic number, because the mean of its divisors is an integer number (202157562).

Almost surely, 2^404315123 is an apocalyptic number.

404315123 is a deficient number, since it is larger than the sum of its proper divisors (1).

404315123 is an equidigital number, since it uses as much as digits as its factorization.

404315123 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1440, while the sum is 23.

The square root of 404315123 is about 20107.5886918347. The cubic root of 404315123 is about 739.4463371349.

Adding to 404315123 its reverse (321513404), we get a palindrome (725828527).

It can be divided in two parts, 40431 and 5123, that added together give a palindrome (45554).

The spelling of 404315123 in words is "four hundred four million, three hundred fifteen thousand, one hundred twenty-three".