12512323031513 has 4 divisors (see below), whose sum is σ = 12557493873060. Its totient is φ = 12467152189968.

The previous prime is 12512323031459. The next prime is 12512323031519. The reversal of 12512323031513 is 31513032321521.

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

It can be written as a sum of positive squares in 2 ways, for example, as 8209984204249 + 4302338827264 = 2865307^2 + 2074208^2 .

It is a cyclic number.

It is not a de Polignac number, because 12512323031513 - 2¹² = 12512323027417 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 12512323031513.

It is not an unprimeable number, because it can be changed into a prime (12512323031519) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22585420358 + ... + 22585420911.

It is an arithmetic number, because the mean of its divisors is an integer number (3139373468265).

Almost surely, 2^{12512323031513} is an apocalyptic number.

It is an amenable number.

12512323031513 is a deficient number, since it is larger than the sum of its proper divisors (45170841547).

12512323031513 is an equidigital number, since it uses as much as digits as its factorization.

12512323031513 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45170841546.

The product of its (nonzero) digits is 16200, while the sum is 32.

The spelling of 12512323031513 in words is "twelve trillion, five hundred twelve billion, three hundred twenty-three million, thirty-one thousand, five hundred thirteen".