111231336497 has 2 divisors, whose sum is σ = 111231336498. Its totient is φ = 111231336496.

The previous prime is 111231336457. The next prime is 111231336523. The reversal of 111231336497 is 794633132111.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 90321887296 + 20909449201 = 300536^2 + 144601^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-111231336497 is a prime.

It is not a weakly prime, because it can be changed into another prime (111231336457) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55615668248 + 55615668249.

It is an arithmetic number, because the mean of its divisors is an integer number (55615668249).

Almost surely, 2^111231336497 is an apocalyptic number.

It is an amenable number.

111231336497 is a deficient number, since it is larger than the sum of its proper divisors (1).

111231336497 is an equidigital number, since it uses as much as digits as its factorization.

111231336497 is an evil number, because the sum of its binary digits is even.

The product of its digits is 81648, while the sum is 41.

The spelling of 111231336497 in words is "one hundred eleven billion, two hundred thirty-one million, three hundred thirty-six thousand, four hundred ninety-seven".