12430731 has 8 divisors (see below), whose sum is σ = 17446720. Its totient is φ = 7850952.

The previous prime is 12430727. The next prime is 12430739. The reversal of 12430731 is 13703421.

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

It is not a de Polignac number, because 12430731 - 2² = 12430727 is a prime.

It is a super-2 number, since 2×12430731² = 309046146388722, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12430698 and 12430707.

It is not an unprimeable number, because it can be changed into a prime (12430739) 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, 108985 + ... + 109098.

It is an arithmetic number, because the mean of its divisors is an integer number (2180840).

Almost surely, 2^12430731 is an apocalyptic number.

12430731 is a deficient number, since it is larger than the sum of its proper divisors (5015989).

12430731 is a wasteful number, since it uses less digits than its factorization.

12430731 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 218105.

The product of its (nonzero) digits is 504, while the sum is 21.

The square root of 12430731 is about 3525.7241809308. The cubic root of 12430731 is about 231.6499564113.

The spelling of 12430731 in words is "twelve million, four hundred thirty thousand, seven hundred thirty-one".