12013431630 has 16 divisors (see below), whose sum is σ = 28832235984. Its totient is φ = 3203581760.

The previous prime is 12013431571. The next prime is 12013431653. The reversal of 12013431630 is 3613431021.

It is a happy number.

12013431630 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 12013431630.

It is a congruent number.

It is an unprimeable number.

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, 200223831 + ... + 200223890.

It is an arithmetic number, because the mean of its divisors is an integer number (1802014749).

Almost surely, 2^12013431630 is an apocalyptic number.

12013431630 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12013431630 is an abundant number, since it is smaller than the sum of its proper divisors (16818804354).

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

12013431630 is a wasteful number, since it uses less digits than its factorization.

12013431630 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 400447731.

The product of its (nonzero) digits is 1296, while the sum is 24.

Adding to 12013431630 its reverse (3613431021), we get a palindrome (15626862651).

The spelling of 12013431630 in words is "twelve billion, thirteen million, four hundred thirty-one thousand, six hundred thirty".