451273231 has 8 divisors (see below), whose sum is σ = 472393728. Its totient is φ = 430563000.

The previous prime is 451273187. The next prime is 451273243. The reversal of 451273231 is 132372154.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 451273231 - 2⁷ = 451273103 is a prime.

It is a super-2 number, since 2×451273231² = 407295058034358722, 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 451273231.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (451273631) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 100315 + ... + 104716.

It is an arithmetic number, because the mean of its divisors is an integer number (59049216).

Almost surely, 2^451273231 is an apocalyptic number.

451273231 is a deficient number, since it is larger than the sum of its proper divisors (21120497).

451273231 is a wasteful number, since it uses less digits than its factorization.

451273231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 205133.

The product of its digits is 5040, while the sum is 28.

The square root of 451273231 is about 21243.1925802126. The cubic root of 451273231 is about 767.0314843663.

The spelling of 451273231 in words is "four hundred fifty-one million, two hundred seventy-three thousand, two hundred thirty-one".