231301311023 has 4 divisors (see below), whose sum is σ = 231302927928. Its totient is φ = 231299694120.

The previous prime is 231301311013. The next prime is 231301311029. The reversal of 231301311023 is 320113103132.

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

It is a cyclic number.

It is not a de Polignac number, because 231301311023 - 2²² = 231297116719 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 231301310986 and 231301311004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231301311029) 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, 570536 + ... + 887757.

It is an arithmetic number, because the mean of its divisors is an integer number (57825731982).

Almost surely, 2^231301311023 is an apocalyptic number.

231301311023 is a deficient number, since it is larger than the sum of its proper divisors (1616905).

231301311023 is a wasteful number, since it uses less digits than its factorization.

231301311023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1616904.

The product of its (nonzero) digits is 324, while the sum is 20.

Adding to 231301311023 its reverse (320113103132), we get a palindrome (551414414155).

The spelling of 231301311023 in words is "two hundred thirty-one billion, three hundred one million, three hundred eleven thousand, twenty-three".