122686310231 has 4 divisors (see below), whose sum is σ = 122687031264. Its totient is φ = 122685589200.

The previous prime is 122686310213. The next prime is 122686310287. The reversal of 122686310231 is 132013686221.

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.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-122686310231 is a prime.

It is a super-2 number, since 2×122686310231² (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 = 122686310191 and 122686310200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122686310431) 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, 52226 + ... + 498096.

It is an arithmetic number, because the mean of its divisors is an integer number (30671757816).

Almost surely, 2^122686310231 is an apocalyptic number.

122686310231 is a deficient number, since it is larger than the sum of its proper divisors (721033).

122686310231 is an equidigital number, since it uses as much as digits as its factorization.

122686310231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 721032.

The product of its (nonzero) digits is 20736, while the sum is 35.

Adding to 122686310231 its reverse (132013686221), we get a palindrome (254699996452).

The spelling of 122686310231 in words is "one hundred twenty-two billion, six hundred eighty-six million, three hundred ten thousand, two hundred thirty-one".