12013212313 has 8 divisors (see below), whose sum is σ = 12127543560. Its totient is φ = 11898956160.

The previous prime is 12013212293. The next prime is 12013212377. The reversal of 12013212313 is 31321231021.

It can be written as a sum of positive squares in 4 ways, for example, as 7687256329 + 4325955984 = 87677^2 + 65772^2 .

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 12013212313 - 2⁹ = 12013211801 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12013213313) 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, 333981 + ... + 368197.

It is an arithmetic number, because the mean of its divisors is an integer number (1515942945).

Almost surely, 2^12013212313 is an apocalyptic number.

It is an amenable number.

12013212313 is a deficient number, since it is larger than the sum of its proper divisors (114331247).

12013212313 is a wasteful number, since it uses less digits than its factorization.

12013212313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37547.

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 12013212313 its reverse (31321231021), we get a palindrome (43334443334).

The spelling of 12013212313 in words is "twelve billion, thirteen million, two hundred twelve thousand, three hundred thirteen".