12311430 has 32 divisors (see below), whose sum is σ = 31104000. Its totient is φ = 3110112.

The previous prime is 12311419. The next prime is 12311443. The reversal of 12311430 is 3411321.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10230 + ... + 11369.

It is an arithmetic number, because the mean of its divisors is an integer number (972000).

Almost surely, 2^12311430 is an apocalyptic number.

12311430 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12311430 is an abundant number, since it is smaller than the sum of its proper divisors (18792570).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12311430 is a wasteful number, since it uses less digits than its factorization.

12311430 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21628.

The product of its (nonzero) digits is 72, while the sum is 15.

The square root of 12311430 is about 3508.7647399049. The cubic root of 12311430 is about 230.9065043946.

Adding to 12311430 its reverse (3411321), we get a palindrome (15722751).

The spelling of 12311430 in words is "twelve million, three hundred eleven thousand, four hundred thirty".