123656216 has 16 divisors (see below), whose sum is σ = 232715040. Its totient is φ = 61598880.

The previous prime is 123656213. The next prime is 123656231. The reversal of 123656216 is 612656321.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123656213) 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, 26351 + ... + 30686.

It is an arithmetic number, because the mean of its divisors is an integer number (14544690).

Almost surely, 2^123656216 is an apocalyptic number.

It is an amenable number.

123656216 is a deficient number, since it is larger than the sum of its proper divisors (109058824).

123656216 is a wasteful number, since it uses less digits than its factorization.

123656216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57314 (or 57310 counting only the distinct ones).

The product of its digits is 12960, while the sum is 32.

The square root of 123656216 is about 11120.0816543765. The cubic root of 123656216 is about 498.2018289138.

It can be divided in two parts, 12365 and 6216, that added together give a palindrome (18581).

The spelling of 123656216 in words is "one hundred twenty-three million, six hundred fifty-six thousand, two hundred sixteen".