423331905 has 32 divisors (see below), whose sum is σ = 713836800. Its totient is φ = 213804800.

The previous prime is 423331897. The next prime is 423331927. The reversal of 423331905 is 509133324.

It is not a de Polignac number, because 423331905 - 2³ = 423331897 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 28771 + ... + 40919.

It is an arithmetic number, because the mean of its divisors is an integer number (22307400).

Almost surely, 2^423331905 is an apocalyptic number.

It is an amenable number.

423331905 is a deficient number, since it is larger than the sum of its proper divisors (290504895).

423331905 is a wasteful number, since it uses less digits than its factorization.

423331905 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12281.

The product of its (nonzero) digits is 9720, while the sum is 30.

The square root of 423331905 is about 20575.0311056873. The cubic root of 423331905 is about 750.8623591799.

The spelling of 423331905 in words is "four hundred twenty-three million, three hundred thirty-one thousand, nine hundred five".