423005923 has 2 divisors, whose sum is σ = 423005924. Its totient is φ = 423005922.

The previous prime is 423005899. The next prime is 423005929. The reversal of 423005923 is 329500324.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-423005923 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 423005891 and 423005900.

It is not a weakly prime, because it can be changed into another prime (423005929) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 211502961 + 211502962.

It is an arithmetic number, because the mean of its divisors is an integer number (211502962).

Almost surely, 2^423005923 is an apocalyptic number.

423005923 is a deficient number, since it is larger than the sum of its proper divisors (1).

423005923 is an equidigital number, since it uses as much as digits as its factorization.

423005923 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6480, while the sum is 28.

The square root of 423005923 is about 20567.1077937565. The cubic root of 423005923 is about 750.6695786340.

The spelling of 423005923 in words is "four hundred twenty-three million, five thousand, nine hundred twenty-three".