122531 has 4 divisors (see below), whose sum is σ = 129000. Its totient is φ = 116064.

The previous prime is 122527. The next prime is 122533. The reversal of 122531 is 135221.

It is a happy number.

122531 is nontrivially palindromic in base 14.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 122531 - 2² = 122527 is a prime.

It is a super-2 number, since 2×122531² = 30027691922, which contains 22 as substring.

It is a Duffinian number.

It is a plaindrome in base 12.

It is not an unprimeable number, because it can be changed into a prime (122533) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3206 + ... + 3243.

It is an arithmetic number, because the mean of its divisors is an integer number (32250).

2¹²²⁵³¹ is an apocalyptic number.

122531 is a deficient number, since it is larger than the sum of its proper divisors (6469).

122531 is an equidigital number, since it uses as much as digits as its factorization.

122531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6468.

The product of its digits is 60, while the sum is 14.

The square root of 122531 is about 350.0442829129. The cubic root of 122531 is about 49.6686084452.

Adding to 122531 its reverse (135221), we get a palindrome (257752).

The spelling of 122531 in words is "one hundred twenty-two thousand, five hundred thirty-one".