123430431 has 8 divisors (see below), whose sum is σ = 164868480. Its totient is φ = 82139672.

The previous prime is 123430429. The next prime is 123430477. The reversal of 123430431 is 134034321.

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

It is a cyclic number.

It is not a de Polignac number, because 123430431 - 2¹ = 123430429 is a prime.

It is a super-2 number, since 2×123430431² = 30470142593691522, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 123430398 and 123430407.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123430031) 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 in 7 ways as a sum of consecutive naturals, for example, 34851 + ... + 38228.

It is an arithmetic number, because the mean of its divisors is an integer number (20608560).

Almost surely, 2^123430431 is an apocalyptic number.

123430431 is a deficient number, since it is larger than the sum of its proper divisors (41438049).

123430431 is an equidigital number, since it uses as much as digits as its factorization.

123430431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73645.

The product of its (nonzero) digits is 864, while the sum is 21.

The square root of 123430431 is about 11109.9248872348. The cubic root of 123430431 is about 497.8984204359.

Adding to 123430431 its reverse (134034321), we get a palindrome (257464752).

The spelling of 123430431 in words is "one hundred twenty-three million, four hundred thirty thousand, four hundred thirty-one".