122115831 has 12 divisors (see below), whose sum is σ = 171843192. Its totient is φ = 77125104.

The previous prime is 122115827. The next prime is 122115841. The reversal of 122115831 is 138511221.

It is not a de Polignac number, because 122115831 - 2² = 122115827 is a prime.

It is a super-2 number, since 2×122115831² = 29824552361641122, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122115821) 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, 55296 + ... + 57461.

It is an arithmetic number, because the mean of its divisors is an integer number (14320266).

Almost surely, 2^122115831 is an apocalyptic number.

122115831 is a deficient number, since it is larger than the sum of its proper divisors (49727361).

122115831 is a wasteful number, since it uses less digits than its factorization.

122115831 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 112798 (or 112779 counting only the distinct ones).

The product of its digits is 480, while the sum is 24.

The square root of 122115831 is about 11050.6031962061. The cubic root of 122115831 is about 496.1244796290.

The spelling of 122115831 in words is "one hundred twenty-two million, one hundred fifteen thousand, eight hundred thirty-one".