450731231 has 4 divisors (see below), whose sum is σ = 451635000. Its totient is φ = 449827464.

The previous prime is 450731221. The next prime is 450731249. The reversal of 450731231 is 132137054.

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 450731231 - 2¹⁰ = 450730207 is a prime.

It is a super-2 number, since 2×450731231² = 406317285197550722, 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 450731231.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (450731221) 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, 451136 + ... + 452133.

It is an arithmetic number, because the mean of its divisors is an integer number (112908750).

Almost surely, 2^450731231 is an apocalyptic number.

450731231 is a deficient number, since it is larger than the sum of its proper divisors (903769).

450731231 is an equidigital number, since it uses as much as digits as its factorization.

450731231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 903768.

The product of its (nonzero) digits is 2520, while the sum is 26.

The square root of 450731231 is about 21230.4317195859. The cubic root of 450731231 is about 766.7242812614.

Adding to 450731231 its reverse (132137054), we get a palindrome (582868285).

The spelling of 450731231 in words is "four hundred fifty million, seven hundred thirty-one thousand, two hundred thirty-one".