123122431 has 2 divisors, whose sum is σ = 123122432. Its totient is φ = 123122430.

The previous prime is 123122423. The next prime is 123122437. The reversal of 123122431 is 134221321.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 123122431 - 2³ = 123122423 is a prime.

It is a super-2 number, since 2×123122431² = 30318266030699522, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 123122399 and 123122408.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (123122437) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61561215 + 61561216.

It is an arithmetic number, because the mean of its divisors is an integer number (61561216).

Almost surely, 2^123122431 is an apocalyptic number.

123122431 is a deficient number, since it is larger than the sum of its proper divisors (1).

123122431 is an equidigital number, since it uses as much as digits as its factorization.

123122431 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 288, while the sum is 19.

The square root of 123122431 is about 11096.0547493242. The cubic root of 123122431 is about 497.4839347354.

Adding to 123122431 its reverse (134221321), we get a palindrome (257343752).

The spelling of 123122431 in words is "one hundred twenty-three million, one hundred twenty-two thousand, four hundred thirty-one".