231203032111 has 2 divisors, whose sum is σ = 231203032112. Its totient is φ = 231203032110.

The previous prime is 231203032091. The next prime is 231203032117. The reversal of 231203032111 is 111230302132.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 231203032111 - 2¹⁵ = 231202999343 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (231203032117) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 115601516055 + 115601516056.

It is an arithmetic number, because the mean of its divisors is an integer number (115601516056).

Almost surely, 2^231203032111 is an apocalyptic number.

231203032111 is a deficient number, since it is larger than the sum of its proper divisors (1).

231203032111 is an equidigital number, since it uses as much as digits as its factorization.

231203032111 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 231203032111 its reverse (111230302132), we get a palindrome (342433334243).

The spelling of 231203032111 in words is "two hundred thirty-one billion, two hundred three million, thirty-two thousand, one hundred eleven".