423453971 has 2 divisors, whose sum is σ = 423453972. Its totient is φ = 423453970.

The previous prime is 423453959. The next prime is 423454013. The reversal of 423453971 is 179354324.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-423453971 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (423453571) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 211726985 + 211726986.

It is an arithmetic number, because the mean of its divisors is an integer number (211726986).

Almost surely, 2^423453971 is an apocalyptic number.

423453971 is a deficient number, since it is larger than the sum of its proper divisors (1).

423453971 is an equidigital number, since it uses as much as digits as its factorization.

423453971 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 90720, while the sum is 38.

The square root of 423453971 is about 20577.9972543491. The cubic root of 423453971 is about 750.9345215941.

It can be divided in two parts, 423453 and 971, that added together give a palindrome (424424).

The spelling of 423453971 in words is "four hundred twenty-three million, four hundred fifty-three thousand, nine hundred seventy-one".