123430133191 has 2 divisors, whose sum is σ = 123430133192. Its totient is φ = 123430133190.

The previous prime is 123430133117. The next prime is 123430133201. The reversal of 123430133191 is 191331034321.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-123430133191 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (123430133111) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61715066595 + 61715066596.

It is an arithmetic number, because the mean of its divisors is an integer number (61715066596).

Almost surely, 2^123430133191 is an apocalyptic number.

123430133191 is a deficient number, since it is larger than the sum of its proper divisors (1).

123430133191 is an equidigital number, since it uses as much as digits as its factorization.

123430133191 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5832, while the sum is 31.

The spelling of 123430133191 in words is "one hundred twenty-three billion, four hundred thirty million, one hundred thirty-three thousand, one hundred ninety-one".