231132623 has 4 divisors (see below), whose sum is σ = 231260688. Its totient is φ = 231004560.

The previous prime is 231132607. The next prime is 231132631. The reversal of 231132623 is 326231132.

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 231132623 - 2⁴ = 231132607 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 (231132653) 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, 61286 + ... + 64947.

It is an arithmetic number, because the mean of its divisors is an integer number (57815172).

Almost surely, 2^231132623 is an apocalyptic number.

231132623 is a deficient number, since it is larger than the sum of its proper divisors (128065).

231132623 is a wasteful number, since it uses less digits than its factorization.

231132623 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 128064.

The product of its digits is 1296, while the sum is 23.

The square root of 231132623 is about 15203.0465039084. The cubic root of 231132623 is about 613.6966453398.

Adding to 231132623 its reverse (326231132), we get a palindrome (557363755).

The spelling of 231132623 in words is "two hundred thirty-one million, one hundred thirty-two thousand, six hundred twenty-three".