123033431 has 2 divisors, whose sum is σ = 123033432. Its totient is φ = 123033430.

The previous prime is 123033367. The next prime is 123033481. The reversal of 123033431 is 134330321.

It is a strong prime.

It is an emirp because it is prime and its reverse (134330321) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 123033431 - 2⁶ = 123033367 is a prime.

It is a super-2 number, since 2×123033431² = 30274450287263522, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (123033481) 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, 61516715 + 61516716.

It is an arithmetic number, because the mean of its divisors is an integer number (61516716).

Almost surely, 2^123033431 is an apocalyptic number.

123033431 is a deficient number, since it is larger than the sum of its proper divisors (1).

123033431 is an equidigital number, since it uses as much as digits as its factorization.

123033431 is an odious number, because the sum of its binary digits is odd.

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

The square root of 123033431 is about 11092.0435898891. The cubic root of 123033431 is about 497.3640358062.

Adding to 123033431 its reverse (134330321), we get a palindrome (257363752).

The spelling of 123033431 in words is "one hundred twenty-three million, thirty-three thousand, four hundred thirty-one".