451331423 has 2 divisors, whose sum is σ = 451331424. Its totient is φ = 451331422.

The previous prime is 451331417. The next prime is 451331431. The reversal of 451331423 is 324133154.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-451331423 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 451331392 and 451331401.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (451336423) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 225665711 + 225665712.

It is an arithmetic number, because the mean of its divisors is an integer number (225665712).

Almost surely, 2^451331423 is an apocalyptic number.

451331423 is a deficient number, since it is larger than the sum of its proper divisors (1).

451331423 is an equidigital number, since it uses as much as digits as its factorization.

451331423 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4320, while the sum is 26.

The square root of 451331423 is about 21244.5621983603. The cubic root of 451331423 is about 767.0644526987.

Adding to 451331423 its reverse (324133154), we get a palindrome (775464577).

The spelling of 451331423 in words is "four hundred fifty-one million, three hundred thirty-one thousand, four hundred twenty-three".