231023311243 has 2 divisors, whose sum is σ = 231023311244. Its totient is φ = 231023311242.

The previous prime is 231023311229. The next prime is 231023311279. The reversal of 231023311243 is 342113320132.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 231023311243 - 2²¹ = 231021214091 is a prime.

It is not a weakly prime, because it can be changed into another prime (231023311283) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 115511655621 + 115511655622.

It is an arithmetic number, because the mean of its divisors is an integer number (115511655622).

Almost surely, 2^231023311243 is an apocalyptic number.

231023311243 is a deficient number, since it is larger than the sum of its proper divisors (1).

231023311243 is an equidigital number, since it uses as much as digits as its factorization.

231023311243 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2592, while the sum is 25.

Adding to 231023311243 its reverse (342113320132), we get a palindrome (573136631375).

The spelling of 231023311243 in words is "two hundred thirty-one billion, twenty-three million, three hundred eleven thousand, two hundred forty-three".