122431124531 has 4 divisors (see below), whose sum is σ = 122682523632. Its totient is φ = 122179725432.

The previous prime is 122431124513. The next prime is 122431124551. The reversal of 122431124531 is 135421134221.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-122431124531 is a prime.

It is a super-2 number, since 2×122431124531² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 122431124494 and 122431124503.

It is not an unprimeable number, because it can be changed into a prime (122431124551) 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, 125698820 + ... + 125699793.

It is an arithmetic number, because the mean of its divisors is an integer number (30670630908).

Almost surely, 2^122431124531 is an apocalyptic number.

122431124531 is a deficient number, since it is larger than the sum of its proper divisors (251399101).

122431124531 is an equidigital number, since it uses as much as digits as its factorization.

122431124531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 251399100.

The product of its digits is 5760, while the sum is 29.

Adding to 122431124531 its reverse (135421134221), we get a palindrome (257852258752).

The spelling of 122431124531 in words is "one hundred twenty-two billion, four hundred thirty-one million, one hundred twenty-four thousand, five hundred thirty-one".