123403331 has 2 divisors, whose sum is σ = 123403332. Its totient is φ = 123403330.

The previous prime is 123403297. The next prime is 123403337. The reversal of 123403331 is 133304321.

It is a strong prime.

It is an emirp because it is prime and its reverse (133304321) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-123403331 is a prime.

It is a super-2 number, since 2×123403331² = 30456764203791122, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (123403337) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61701665 + 61701666.

It is an arithmetic number, because the mean of its divisors is an integer number (61701666).

Almost surely, 2^123403331 is an apocalyptic number.

123403331 is a deficient number, since it is larger than the sum of its proper divisors (1).

123403331 is an equidigital number, since it uses as much as digits as its factorization.

123403331 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 648, while the sum is 20.

The square root of 123403331 is about 11108.7051900750. The cubic root of 123403331 is about 497.8619787613.

Adding to 123403331 its reverse (133304321), we get a palindrome (256707652).

The spelling of 123403331 in words is "one hundred twenty-three million, four hundred three thousand, three hundred thirty-one".