451205231 has 4 divisors (see below), whose sum is σ = 451262952. Its totient is φ = 451147512.

The previous prime is 451205207. The next prime is 451205233. The reversal of 451205231 is 132502154.

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 451205231 - 2¹⁰ = 451204207 is a prime.

It is a super-2 number, since 2×451205231² = 407172320963526722, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 451205197 and 451205206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (451205233) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14876 + ... + 33521.

It is an arithmetic number, because the mean of its divisors is an integer number (112815738).

Almost surely, 2^451205231 is an apocalyptic number.

451205231 is a deficient number, since it is larger than the sum of its proper divisors (57721).

451205231 is an equidigital number, since it uses as much as digits as its factorization.

451205231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57720.

The product of its (nonzero) digits is 1200, while the sum is 23.

The square root of 451205231 is about 21241.5920071919. The cubic root of 451205231 is about 766.9929557784.

Adding to 451205231 its reverse (132502154), we get a palindrome (583707385).

The spelling of 451205231 in words is "four hundred fifty-one million, two hundred five thousand, two hundred thirty-one".