232123431 has 4 divisors (see below), whose sum is σ = 309497912. Its totient is φ = 154748952.

The previous prime is 232123403. The next prime is 232123433. The reversal of 232123431 is 134321232.

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

It is not a de Polignac number, because 232123431 - 2¹³ = 232115239 is a prime.

It is a super-2 number, since 2×232123431² = 107762574438423522, 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 = 232123398 and 232123407.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (232123433) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 38687236 + ... + 38687241.

It is an arithmetic number, because the mean of its divisors is an integer number (77374478).

Almost surely, 2^232123431 is an apocalyptic number.

232123431 is a deficient number, since it is larger than the sum of its proper divisors (77374481).

232123431 is an equidigital number, since it uses as much as digits as its factorization.

232123431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77374480.

The product of its digits is 864, while the sum is 21.

The square root of 232123431 is about 15235.5974940269. The cubic root of 232123431 is about 614.5723168343.

Adding to 232123431 its reverse (134321232), we get a palindrome (366444663).

It can be divided in two parts, 2321 and 23431, that added together give a palindrome (25752).

The spelling of 232123431 in words is "two hundred thirty-two million, one hundred twenty-three thousand, four hundred thirty-one".