123430331 has 2 divisors, whose sum is σ = 123430332. Its totient is φ = 123430330.

The previous prime is 123430297. The next prime is 123430343. The reversal of 123430331 is 133034321.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 123430331 - 2²² = 119236027 is a prime.

It is a super-2 number, since 2×123430331² = 30470093221539122, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (123430361) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61715165 + 61715166.

It is an arithmetic number, because the mean of its divisors is an integer number (61715166).

Almost surely, 2^123430331 is an apocalyptic number.

123430331 is a deficient number, since it is larger than the sum of its proper divisors (1).

123430331 is an equidigital number, since it uses as much as digits as its factorization.

123430331 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 123430331 is about 11109.9203867535. The cubic root of 123430331 is about 497.8982859746.

Adding to 123430331 its reverse (133034321), we get a palindrome (256464652).

It can be divided in two parts, 12 and 3430331, that added together give a palindrome (3430343).

The spelling of 123430331 in words is "one hundred twenty-three million, four hundred thirty thousand, three hundred thirty-one".