231323141 has 4 divisors (see below), whose sum is σ = 264369312. Its totient is φ = 198276972.

The previous prime is 231323137. The next prime is 231323159. The reversal of 231323141 is 141323132.

231323141 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 231323141 - 2² = 231323137 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231323171) 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, 16523075 + ... + 16523088.

It is an arithmetic number, because the mean of its divisors is an integer number (66092328).

Almost surely, 2^231323141 is an apocalyptic number.

It is an amenable number.

231323141 is a deficient number, since it is larger than the sum of its proper divisors (33046171).

231323141 is an equidigital number, since it uses as much as digits as its factorization.

231323141 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33046170.

The product of its digits is 432, while the sum is 20.

The square root of 231323141 is about 15209.3109968861. The cubic root of 231323141 is about 613.8652183228.

Adding to 231323141 its reverse (141323132), we get a palindrome (372646273).

Subtracting from 231323141 its reverse (141323132), we obtain a palindrome (90000009).

The spelling of 231323141 in words is "two hundred thirty-one million, three hundred twenty-three thousand, one hundred forty-one".