123220110331 has 2 divisors, whose sum is σ = 123220110332. Its totient is φ = 123220110330.

The previous prime is 123220110317. The next prime is 123220110347. The reversal of 123220110331 is 133011022321.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 123220110331 - 2²³ = 123211721723 is a prime.

It is a super-2 number, since 2×123220110331² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 123220110299 and 123220110308.

It is not a weakly prime, because it can be changed into another prime (123220110131) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61610055165 + 61610055166.

It is an arithmetic number, because the mean of its divisors is an integer number (61610055166).

Almost surely, 2^123220110331 is an apocalyptic number.

123220110331 is a deficient number, since it is larger than the sum of its proper divisors (1).

123220110331 is an equidigital number, since it uses as much as digits as its factorization.

123220110331 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 123220110331 its reverse (133011022321), we get a palindrome (256231132652).

The spelling of 123220110331 in words is "one hundred twenty-three billion, two hundred twenty million, one hundred ten thousand, three hundred thirty-one".