123430332431 has 4 divisors (see below), whose sum is σ = 141063237072. Its totient is φ = 105797427792.

The previous prime is 123430332391. The next prime is 123430332449. The reversal of 123430332431 is 134233034321.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 123430332431 - 2³⁰ = 122356590607 is a prime.

It is a super-2 number, since 2×123430332431² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 123430332394 and 123430332403.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123430332931) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8816452310 + ... + 8816452323.

It is an arithmetic number, because the mean of its divisors is an integer number (35265809268).

Almost surely, 2^123430332431 is an apocalyptic number.

123430332431 is a deficient number, since it is larger than the sum of its proper divisors (17632904641).

123430332431 is an equidigital number, since it uses as much as digits as its factorization.

123430332431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17632904640.

The product of its (nonzero) digits is 15552, while the sum is 29.

Adding to 123430332431 its reverse (134233034321), we get a palindrome (257663366752).

The spelling of 123430332431 in words is "one hundred twenty-three billion, four hundred thirty million, three hundred thirty-two thousand, four hundred thirty-one".