232431145 has 4 divisors (see below), whose sum is σ = 278917380. Its totient is φ = 185944912.

The previous prime is 232431131. The next prime is 232431163. The reversal of 232431145 is 541134232.

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

It can be written as a sum of positive squares in 2 ways, for example, as 71978256 + 160452889 = 8484^2 + 12667^2 .

It is a cyclic number.

It is not a de Polignac number, because 232431145 - 2²¹ = 230333993 is a prime.

It is a super-2 number, since 2×232431145² = 108048474332022050, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23243110 + ... + 23243119.

It is an arithmetic number, because the mean of its divisors is an integer number (69729345).

Almost surely, 2^232431145 is an apocalyptic number.

It is an amenable number.

232431145 is a deficient number, since it is larger than the sum of its proper divisors (46486235).

232431145 is an equidigital number, since it uses as much as digits as its factorization.

232431145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46486234.

The product of its digits is 2880, while the sum is 25.

The square root of 232431145 is about 15245.6926703905. The cubic root of 232431145 is about 614.8437658087.

Adding to 232431145 its reverse (541134232), we get a palindrome (773565377).

The spelling of 232431145 in words is "two hundred thirty-two million, four hundred thirty-one thousand, one hundred forty-five".