231123017 has 4 divisors (see below), whose sum is σ = 236040576. Its totient is φ = 226205460.

The previous prime is 231122981. The next prime is 231123031. The reversal of 231123017 is 710321132.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 231123017 - 2⁸ = 231122761 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 231123017.

It is not an unprimeable number, because it can be changed into a prime (231123917) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2458709 + ... + 2458802.

It is an arithmetic number, because the mean of its divisors is an integer number (59010144).

Almost surely, 2^231123017 is an apocalyptic number.

It is an amenable number.

231123017 is a deficient number, since it is larger than the sum of its proper divisors (4917559).

231123017 is an equidigital number, since it uses as much as digits as its factorization.

231123017 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4917558.

The product of its (nonzero) digits is 252, while the sum is 20.

The square root of 231123017 is about 15202.7305771036. The cubic root of 231123017 is about 613.6881433644.

Adding to 231123017 its reverse (710321132), we get a palindrome (941444149).

The spelling of 231123017 in words is "two hundred thirty-one million, one hundred twenty-three thousand, seventeen".