122831 has 4 divisors (see below), whose sum is σ = 124032. Its totient is φ = 121632.

The previous prime is 122827. The next prime is 122833. The reversal of 122831 is 138221.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 138221 = 67 ⋅2063.

It is a cyclic number.

It is not a de Polignac number, because 122831 - 2² = 122827 is a prime.

It is a super-2 number, since 2×122831² = 30174909122, which contains 22 as substring.

It is a Duffinian number.

122831 is a Rhonda number in base 6.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122833) 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, 431 + ... + 656.

It is an arithmetic number, because the mean of its divisors is an integer number (31008).

2¹²²⁸³¹ is an apocalyptic number.

122831 is a deficient number, since it is larger than the sum of its proper divisors (1201).

122831 is a wasteful number, since it uses less digits than its factorization.

122831 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1200.

The product of its digits is 96, while the sum is 17.

The square root of 122831 is about 350.4725381538. The cubic root of 122831 is about 49.7091109531.

The spelling of 122831 in words is "one hundred twenty-two thousand, eight hundred thirty-one".