231011023 has 2 divisors, whose sum is σ = 231011024. Its totient is φ = 231011022.

The previous prime is 231011021. The next prime is 231011069. The reversal of 231011023 is 320110132.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 231011023 - 2¹ = 231011021 is a prime.

Together with 231011021, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 231010994 and 231011012.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (231011021) 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 as a sum of consecutive naturals, namely, 115505511 + 115505512.

It is an arithmetic number, because the mean of its divisors is an integer number (115505512).

Almost surely, 2^231011023 is an apocalyptic number.

231011023 is a deficient number, since it is larger than the sum of its proper divisors (1).

231011023 is an equidigital number, since it uses as much as digits as its factorization.

231011023 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 36, while the sum is 13.

The square root of 231011023 is about 15199.0467793214. The cubic root of 231011023 is about 613.5890035281.

Adding to 231011023 its reverse (320110132), we get a palindrome (551121155).

The spelling of 231011023 in words is "two hundred thirty-one million, eleven thousand, twenty-three".