231641323 has 4 divisors (see below), whose sum is σ = 236011968. Its totient is φ = 227270680.

The previous prime is 231641321. The next prime is 231641329. The reversal of 231641323 is 323146132.

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 231641323 - 2¹ = 231641321 is a prime.

It is not an unprimeable number, because it can be changed into a prime (231641321) 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, 2185243 + ... + 2185348.

It is an arithmetic number, because the mean of its divisors is an integer number (59002992).

Almost surely, 2^231641323 is an apocalyptic number.

231641323 is a deficient number, since it is larger than the sum of its proper divisors (4370645).

231641323 is an equidigital number, since it uses as much as digits as its factorization.

231641323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4370644.

The product of its digits is 2592, while the sum is 25.

The square root of 231641323 is about 15219.7675080797. The cubic root of 231641323 is about 614.1465439418.

Adding to 231641323 its reverse (323146132), we get a palindrome (554787455).

The spelling of 231641323 in words is "two hundred thirty-one million, six hundred forty-one thousand, three hundred twenty-three".