123100312 has 16 divisors (see below), whose sum is σ = 231129360. Its totient is φ = 61465824.

The previous prime is 123100309. The next prime is 123100321. The reversal of 123100312 is 213001321.

It is a junction number, because it is equal to n+sod(n) for n = 123100292 and 123100301.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4108 + ... + 16219.

It is an arithmetic number, because the mean of its divisors is an integer number (14445585).

Almost surely, 2^123100312 is an apocalyptic number.

It is an amenable number.

123100312 is a deficient number, since it is larger than the sum of its proper divisors (108029048).

123100312 is a wasteful number, since it uses less digits than its factorization.

123100312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21090 (or 21086 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 13.

The square root of 123100312 is about 11095.0579989471. The cubic root of 123100312 is about 497.4541418805.

Adding to 123100312 its reverse (213001321), we get a palindrome (336101633).

The spelling of 123100312 in words is "one hundred twenty-three million, one hundred thousand, three hundred twelve".