451323431 has 4 divisors (see below), whose sum is σ = 486040632. Its totient is φ = 416606232.

The previous prime is 451323421. The next prime is 451323437. The reversal of 451323431 is 134323154.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 451323431 - 2¹⁴ = 451307047 is a prime.

It is a super-2 number, since 2×451323431² = 407385678739223522, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 451323431.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (451323437) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17358581 + ... + 17358606.

It is an arithmetic number, because the mean of its divisors is an integer number (121510158).

Almost surely, 2^451323431 is an apocalyptic number.

451323431 is a deficient number, since it is larger than the sum of its proper divisors (34717201).

451323431 is a wasteful number, since it uses less digits than its factorization.

451323431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34717200.

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

The square root of 451323431 is about 21244.3741023359. The cubic root of 451323431 is about 767.0599250464.

Adding to 451323431 its reverse (134323154), we get a palindrome (585646585).

The spelling of 451323431 in words is "four hundred fifty-one million, three hundred twenty-three thousand, four hundred thirty-one".