451630023 has 12 divisors (see below), whose sum is σ = 652058280. Its totient is φ = 277925856.

The previous prime is 451630009. The next prime is 451630027. The reversal of 451630023 is 320036154.

It is a happy number.

It is not a de Polignac number, because 451630023 - 2⁸ = 451629767 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 451629975 and 451630002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (451630027) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 444888 + ... + 445901.

It is an arithmetic number, because the mean of its divisors is an integer number (54338190).

Almost surely, 2^451630023 is an apocalyptic number.

451630023 is a deficient number, since it is larger than the sum of its proper divisors (200428257).

451630023 is a wasteful number, since it uses less digits than its factorization.

451630023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 890818 (or 890805 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 24.

The square root of 451630023 is about 21251.5887170818. The cubic root of 451630023 is about 767.2335781946.

Adding to 451630023 its reverse (320036154), we get a palindrome (771666177).

The spelling of 451630023 in words is "four hundred fifty-one million, six hundred thirty thousand, twenty-three".