231311210323 has 2 divisors, whose sum is σ = 231311210324. Its totient is φ = 231311210322.

The previous prime is 231311210279. The next prime is 231311210329. The reversal of 231311210323 is 323012113132.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-231311210323 is a prime.

It is a super-2 number, since 2×231311210323² (a number of 24 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 231311210294 and 231311210303.

It is not a weakly prime, because it can be changed into another prime (231311210329) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 115655605161 + 115655605162.

It is an arithmetic number, because the mean of its divisors is an integer number (115655605162).

Almost surely, 2^231311210323 is an apocalyptic number.

231311210323 is a deficient number, since it is larger than the sum of its proper divisors (1).

231311210323 is an equidigital number, since it uses as much as digits as its factorization.

231311210323 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 648, while the sum is 22.

Adding to 231311210323 its reverse (323012113132), we get a palindrome (554323323455).

The spelling of 231311210323 in words is "two hundred thirty-one billion, three hundred eleven million, two hundred ten thousand, three hundred twenty-three".