122057831 has 4 divisors (see below), whose sum is σ = 139494672. Its totient is φ = 104620992.

The previous prime is 122057813. The next prime is 122057867. The reversal of 122057831 is 138750221.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 138750221 = 3019 ⋅45959.

It is not a de Polignac number, because 122057831 - 2²² = 117863527 is a prime.

It is a super-2 number, since 2×122057831² = 29796228216849122, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 122057794 and 122057803.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122057801) 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, 8718410 + ... + 8718423.

It is an arithmetic number, because the mean of its divisors is an integer number (34873668).

Almost surely, 2^122057831 is an apocalyptic number.

122057831 is a deficient number, since it is larger than the sum of its proper divisors (17436841).

122057831 is an equidigital number, since it uses as much as digits as its factorization.

122057831 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17436840.

The product of its (nonzero) digits is 3360, while the sum is 29.

The square root of 122057831 is about 11047.9785933898. The cubic root of 122057831 is about 496.0459209457.

The spelling of 122057831 in words is "one hundred twenty-two million, fifty-seven thousand, eight hundred thirty-one".