231316023 has 4 divisors (see below), whose sum is σ = 308421368. Its totient is φ = 154210680.

The previous prime is 231316003. The next prime is 231316031. The reversal of 231316023 is 320613132.

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

It is not a de Polignac number, because 231316023 - 2¹⁰ = 231314999 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 (231316003) 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, 38552668 + ... + 38552673.

It is an arithmetic number, because the mean of its divisors is an integer number (77105342).

Almost surely, 2^231316023 is an apocalyptic number.

231316023 is a deficient number, since it is larger than the sum of its proper divisors (77105345).

231316023 is an equidigital number, since it uses as much as digits as its factorization.

231316023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77105344.

The product of its (nonzero) digits is 648, while the sum is 21.

The square root of 231316023 is about 15209.0769936903. The cubic root of 231316023 is about 613.8589218819.

Adding to 231316023 its reverse (320613132), we get a palindrome (551929155).

It can be divided in two parts, 2313 and 16023, that added together give a triangular number (18336 = T₁₉₁).

The spelling of 231316023 in words is "two hundred thirty-one million, three hundred sixteen thousand, twenty-three".