122316813 has 12 divisors (see below), whose sum is σ = 185979040. Its totient is φ = 77252616.

The previous prime is 122316791. The next prime is 122316823. The reversal of 122316813 is 318613221.

It is a happy number.

It is not a de Polignac number, because 122316813 - 2⁵ = 122316781 is a prime.

It is a super-2 number, since 2×122316813² = 29922805484953938, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122316823) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 357481 + ... + 357822.

Almost surely, 2^122316813 is an apocalyptic number.

It is an amenable number.

122316813 is a deficient number, since it is larger than the sum of its proper divisors (63662227).

122316813 is a wasteful number, since it uses less digits than its factorization.

122316813 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 715328 (or 715325 counting only the distinct ones).

The product of its digits is 1728, while the sum is 27.

The square root of 122316813 is about 11059.6931693424. The cubic root of 122316813 is about 496.3965094339.

It can be divided in two parts, 12231 and 6813, that added together give a square (19044 = 138²).

The spelling of 122316813 in words is "one hundred twenty-two million, three hundred sixteen thousand, eight hundred thirteen".