123430133199 has 4 divisors (see below), whose sum is σ = 164573510936. Its totient is φ = 82286755464.

The previous prime is 123430133191. The next prime is 123430133201. The reversal of 123430133199 is 991331034321.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 991331034321 = 3 ⋅330443678107.

It is not a de Polignac number, because 123430133199 - 2³ = 123430133191 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123430133191) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20571688864 + ... + 20571688869.

It is an arithmetic number, because the mean of its divisors is an integer number (41143377734).

Almost surely, 2^123430133199 is an apocalyptic number.

123430133199 is a deficient number, since it is larger than the sum of its proper divisors (41143377737).

123430133199 is an equidigital number, since it uses as much as digits as its factorization.

123430133199 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41143377736.

The product of its (nonzero) digits is 52488, while the sum is 39.

The spelling of 123430133199 in words is "one hundred twenty-three billion, four hundred thirty million, one hundred thirty-three thousand, one hundred ninety-nine".