123103312331 has 2 divisors, whose sum is σ = 123103312332. Its totient is φ = 123103312330.

The previous prime is 123103312309. The next prime is 123103312337. The reversal of 123103312331 is 133213301321.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 123103312331 - 2¹⁴ = 123103295947 is a prime.

It is a super-2 number, since 2×123103312331² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 123103312297 and 123103312306.

It is not a weakly prime, because it can be changed into another prime (123103312337) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61551656165 + 61551656166.

It is an arithmetic number, because the mean of its divisors is an integer number (61551656166).

Almost surely, 2^123103312331 is an apocalyptic number.

123103312331 is a deficient number, since it is larger than the sum of its proper divisors (1).

123103312331 is an equidigital number, since it uses as much as digits as its factorization.

123103312331 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 972, while the sum is 23.

Adding to 123103312331 its reverse (133213301321), we get a palindrome (256316613652).

The spelling of 123103312331 in words is "one hundred twenty-three billion, one hundred three million, three hundred twelve thousand, three hundred thirty-one".