123313333331 has 2 divisors, whose sum is σ = 123313333332. Its totient is φ = 123313333330.

The previous prime is 123313333327. The next prime is 123313333333. The reversal of 123313333331 is 133333313321.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 123313333331 - 2² = 123313333327 is a prime.

It is a super-2 number, since 2×123313333331² (a number of 23 digits) contains 22 as substring.

Together with 123313333333, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 123313333294 and 123313333303.

It is not a weakly prime, because it can be changed into another prime (123313333333) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61656666665 + 61656666666.

It is an arithmetic number, because the mean of its divisors is an integer number (61656666666).

Almost surely, 2^123313333331 is an apocalyptic number.

123313333331 is a deficient number, since it is larger than the sum of its proper divisors (1).

123313333331 is an equidigital number, since it uses as much as digits as its factorization.

123313333331 is an evil number, because the sum of its binary digits is even.

The product of its digits is 13122, while the sum is 29.

Adding to 123313333331 its reverse (133333313321), we get a palindrome (256646646652).

The spelling of 123313333331 in words is "one hundred twenty-three billion, three hundred thirteen million, three hundred thirty-three thousand, three hundred thirty-one".