122856317 has 16 divisors (see below), whose sum is σ = 135939072. Its totient is φ = 110626560.

The previous prime is 122856301. The next prime is 122856319. The reversal of 122856317 is 713658221.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 122856317 - 2⁴ = 122856301 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 (122856319) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 24053 + ... + 28709.

It is an arithmetic number, because the mean of its divisors is an integer number (8496192).

Almost surely, 2^122856317 is an apocalyptic number.

It is an amenable number.

122856317 is a deficient number, since it is larger than the sum of its proper divisors (13082755).

122856317 is a wasteful number, since it uses less digits than its factorization.

122856317 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4748.

The product of its digits is 20160, while the sum is 35.

The square root of 122856317 is about 11084.0568836505. The cubic root of 122856317 is about 497.1252594094.

The spelling of 122856317 in words is "one hundred twenty-two million, eight hundred fifty-six thousand, three hundred seventeen".