122431 has 4 divisors (see below), whose sum is σ = 123264. Its totient is φ = 121600.

The previous prime is 122401. The next prime is 122443. The reversal of 122431 is 134221.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 134221 = 79 ⋅1699.

It is a cyclic number.

It is not a de Polignac number, because 122431 - 2⁵ = 122399 is a prime.

It is a super-2 number, since 2×122431² = 29978699522, which contains 22 as substring.

It is a Duffinian number.

122431 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 130 + ... + 511.

It is an arithmetic number, because the mean of its divisors is an integer number (30816).

2¹²²⁴³¹ is an apocalyptic number.

122431 is a deficient number, since it is larger than the sum of its proper divisors (833).

122431 is an equidigital number, since it uses as much as digits as its factorization.

122431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 832.

The product of its digits is 48, while the sum is 13.

The square root of 122431 is about 349.9014146871. The cubic root of 122431 is about 49.6550929195.

Adding to 122431 its reverse (134221), we get a palindrome (256652).

The spelling of 122431 in words is "one hundred twenty-two thousand, four hundred thirty-one".