123208385 has 32 divisors (see below), whose sum is σ = 158630400. Its totient is φ = 91705600.

The previous prime is 123208363. The next prime is 123208433. The reversal of 123208385 is 583802321.

It is a de Polignac number, because none of the positive numbers 2^k-123208385 is a prime.

It is a super-2 number, since 2×123208385² = 30360612268616450, which contains 22 as substring.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 688226 + ... + 688404.

It is an arithmetic number, because the mean of its divisors is an integer number (4957200).

Almost surely, 2^123208385 is an apocalyptic number.

It is an amenable number.

123208385 is a deficient number, since it is larger than the sum of its proper divisors (35422015).

123208385 is a wasteful number, since it uses less digits than its factorization.

123208385 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 361.

The product of its (nonzero) digits is 11520, while the sum is 32.

The square root of 123208385 is about 11099.9272520139. The cubic root of 123208385 is about 497.5996753224.

The spelling of 123208385 in words is "one hundred twenty-three million, two hundred eight thousand, three hundred eighty-five".