123330431 has 16 divisors (see below), whose sum is σ = 146116608. Its totient is φ = 101865600.

The previous prime is 123330421. The next prime is 123330437. The reversal of 123330431 is 134033321.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-123330431 is a prime.

It is a super-2 number, since 2×123330431² = 30420790421291522, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123330437) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 55991 + ... + 58151.

It is an arithmetic number, because the mean of its divisors is an integer number (9132288).

Almost surely, 2^123330431 is an apocalyptic number.

123330431 is a deficient number, since it is larger than the sum of its proper divisors (22786177).

123330431 is a wasteful number, since it uses less digits than its factorization.

123330431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2462.

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

The square root of 123330431 is about 11105.4234948515. The cubic root of 123330431 is about 497.7639228250.

Adding to 123330431 its reverse (134033321), we get a palindrome (257363752).

The spelling of 123330431 in words is "one hundred twenty-three million, three hundred thirty thousand, four hundred thirty-one".