231040532311 has 2 divisors, whose sum is σ = 231040532312. Its totient is φ = 231040532310.

The previous prime is 231040532269. The next prime is 231040532357. The reversal of 231040532311 is 113235040132.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-231040532311 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (231040532111) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 115520266155 + 115520266156.

It is an arithmetic number, because the mean of its divisors is an integer number (115520266156).

Almost surely, 2^231040532311 is an apocalyptic number.

231040532311 is a deficient number, since it is larger than the sum of its proper divisors (1).

231040532311 is an equidigital number, since it uses as much as digits as its factorization.

231040532311 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2160, while the sum is 25.

Adding to 231040532311 its reverse (113235040132), we get a palindrome (344275572443).

The spelling of 231040532311 in words is "two hundred thirty-one billion, forty million, five hundred thirty-two thousand, three hundred eleven".