123100319999 has 4 divisors (see below), whose sum is σ = 123111450240. Its totient is φ = 123089189760.

The previous prime is 123100319887. The next prime is 123100320001. The reversal of 123100319999 is 999913001321.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-123100319999 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 (123100319099) 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, 5548514 + ... + 5570655.

It is an arithmetic number, because the mean of its divisors is an integer number (30777862560).

Almost surely, 2^123100319999 is an apocalyptic number.

123100319999 is a deficient number, since it is larger than the sum of its proper divisors (11130241).

123100319999 is a wasteful number, since it uses less digits than its factorization.

123100319999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11130240.

The product of its (nonzero) digits is 118098, while the sum is 47.

The spelling of 123100319999 in words is "one hundred twenty-three billion, one hundred million, three hundred nineteen thousand, nine hundred ninety-nine".