231304465 has 32 divisors (see below), whose sum is σ = 338632704. Its totient is φ = 148055040.

The previous prime is 231304433. The next prime is 231304477. The reversal of 231304465 is 564403132.

231304465 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 231304465 - 2⁵ = 231304433 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 74035 + ... + 77095.

It is an arithmetic number, because the mean of its divisors is an integer number (10582272).

Almost surely, 2^231304465 is an apocalyptic number.

It is an amenable number.

231304465 is a deficient number, since it is larger than the sum of its proper divisors (107328239).

231304465 is a wasteful number, since it uses less digits than its factorization.

231304465 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3217.

The product of its (nonzero) digits is 8640, while the sum is 28.

The square root of 231304465 is about 15208.6970184825. The cubic root of 231304465 is about 613.8486976304.

Adding to 231304465 its reverse (564403132), we get a palindrome (795707597).

The spelling of 231304465 in words is "two hundred thirty-one million, three hundred four thousand, four hundred sixty-five".