123424031 has 2 divisors, whose sum is σ = 123424032. Its totient is φ = 123424030.

The previous prime is 123424027. The next prime is 123424039. The reversal of 123424031 is 130424321.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 123424031 - 2² = 123424027 is a prime.

It is a super-2 number, since 2×123424031² = 30466982856577922, which contains 22 as substring.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 123423994 and 123424012.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (123424039) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61712015 + 61712016.

It is an arithmetic number, because the mean of its divisors is an integer number (61712016).

Almost surely, 2^123424031 is an apocalyptic number.

123424031 is a deficient number, since it is larger than the sum of its proper divisors (1).

123424031 is an equidigital number, since it uses as much as digits as its factorization.

123424031 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 576, while the sum is 20.

The square root of 123424031 is about 11109.6368527509. The cubic root of 123424031 is about 497.8898147651.

Adding to 123424031 its reverse (130424321), we get a palindrome (253848352).

The spelling of 123424031 in words is "one hundred twenty-three million, four hundred twenty-four thousand, thirty-one".