231340023 has 8 divisors (see below), whose sum is σ = 342726000. Its totient is φ = 154226664.

The previous prime is 231340009. The next prime is 231340027. The reversal of 231340023 is 320043132.

It is not a de Polignac number, because 231340023 - 2¹⁰ = 231338999 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 231339978 and 231340005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231340027) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4284048 + ... + 4284101.

It is an arithmetic number, because the mean of its divisors is an integer number (42840750).

Almost surely, 2^231340023 is an apocalyptic number.

231340023 is a deficient number, since it is larger than the sum of its proper divisors (111385977).

231340023 is an equidigital number, since it uses as much as digits as its factorization.

231340023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8568158 (or 8568152 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 18.

The square root of 231340023 is about 15209.8659757409. The cubic root of 231340023 is about 613.8801512870.

Adding to 231340023 its reverse (320043132), we get a palindrome (551383155).

The spelling of 231340023 in words is "two hundred thirty-one million, three hundred forty thousand, twenty-three".