232415231 has 4 divisors (see below), whose sum is σ = 232671264. Its totient is φ = 232159200.

The previous prime is 232415221. The next prime is 232415243. The reversal of 232415231 is 132514232.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-232415231 is a prime.

It is a super-2 number, since 2×232415231² = 108033679201566722, 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 = 232415197 and 232415206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (232415221) 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, 126650 + ... + 128471.

It is an arithmetic number, because the mean of its divisors is an integer number (58167816).

Almost surely, 2^232415231 is an apocalyptic number.

232415231 is a deficient number, since it is larger than the sum of its proper divisors (256033).

232415231 is an equidigital number, since it uses as much as digits as its factorization.

232415231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 256032.

The product of its digits is 1440, while the sum is 23.

The square root of 232415231 is about 15245.1707435502. The cubic root of 232415231 is about 614.8297331984.

Adding to 232415231 its reverse (132514232), we get a palindrome (364929463).

Subtracting from 232415231 its reverse (132514232), we obtain a palindrome (99900999).

The spelling of 232415231 in words is "two hundred thirty-two million, four hundred fifteen thousand, two hundred thirty-one".