123303431 has 8 divisors (see below), whose sum is σ = 130654944. Its totient is φ = 115962880.

The previous prime is 123303421. The next prime is 123303443. The reversal of 123303431 is 134303321.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-123303431 is a prime.

It is a super-2 number, since 2×123303431² = 30407472192743522, 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 (123303421) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 37046 + ... + 40236.

It is an arithmetic number, because the mean of its divisors is an integer number (16331868).

Almost surely, 2^123303431 is an apocalyptic number.

123303431 is a deficient number, since it is larger than the sum of its proper divisors (7351513).

123303431 is a wasteful number, since it uses less digits than its factorization.

123303431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5481.

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

The square root of 123303431 is about 11104.2078060526. The cubic root of 123303431 is about 497.7275960059.

Adding to 123303431 its reverse (134303321), we get a palindrome (257606752).

The spelling of 123303431 in words is "one hundred twenty-three million, three hundred three thousand, four hundred thirty-one".