231111133103 has 2 divisors, whose sum is σ = 231111133104. Its totient is φ = 231111133102.

The previous prime is 231111133073. The next prime is 231111133111. The reversal of 231111133103 is 301331111132.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 231111133103 - 2³⁴ = 213931263919 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (231111933103) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 115555566551 + 115555566552.

It is an arithmetic number, because the mean of its divisors is an integer number (115555566552).

Almost surely, 2^231111133103 is an apocalyptic number.

231111133103 is a deficient number, since it is larger than the sum of its proper divisors (1).

231111133103 is an equidigital number, since it uses as much as digits as its factorization.

231111133103 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 162, while the sum is 20.

Adding to 231111133103 its reverse (301331111132), we get a palindrome (532442244235).

The spelling of 231111133103 in words is "two hundred thirty-one billion, one hundred eleven million, one hundred thirty-three thousand, one hundred three".