231108698515559 has 2 divisors, whose sum is σ = 231108698515560. Its totient is φ = 231108698515558.

The previous prime is 231108698515477. The next prime is 231108698515577. The reversal of 231108698515559 is 955515896801132.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-231108698515559 is a prime.

It is a super-2 number, since 2×231108698515559² (a number of 30 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (231108698515579) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 115554349257779 + 115554349257780.

It is an arithmetic number, because the mean of its divisors is an integer number (115554349257780).

Almost surely, 2^{231108698515559} is an apocalyptic number.

231108698515559 is a deficient number, since it is larger than the sum of its proper divisors (1).

231108698515559 is an equidigital number, since it uses as much as digits as its factorization.

231108698515559 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 116640000, while the sum is 68.

The spelling of 231108698515559 in words is "two hundred thirty-one trillion, one hundred eight billion, six hundred ninety-eight million, five hundred fifteen thousand, five hundred fifty-nine".