231032641 has 4 divisors (see below), whose sum is σ = 264037312. Its totient is φ = 198027972.

The previous prime is 231032639. The next prime is 231032653. The reversal of 231032641 is 146230132.

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 231032641 - 2¹ = 231032639 is a prime.

It is not an unprimeable number, because it can be changed into a prime (231032041) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16502325 + ... + 16502338.

It is an arithmetic number, because the mean of its divisors is an integer number (66009328).

Almost surely, 2^231032641 is an apocalyptic number.

It is an amenable number.

231032641 is a deficient number, since it is larger than the sum of its proper divisors (33004671).

231032641 is an equidigital number, since it uses as much as digits as its factorization.

231032641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33004670.

The product of its (nonzero) digits is 864, while the sum is 22.

The square root of 231032641 is about 15199.7579257039. The cubic root of 231032641 is about 613.6081428072.

Adding to 231032641 its reverse (146230132), we get a palindrome (377262773).

The spelling of 231032641 in words is "two hundred thirty-one million, thirty-two thousand, six hundred forty-one".