20120232313 has 4 divisors (see below), whose sum is σ = 20130309540. Its totient is φ = 20110155088.

The previous prime is 20120232299. The next prime is 20120232337. The reversal of 20120232313 is 31323202102.

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 461949049 + 19658283264 = 21493^2 + 140208^2 .

It is a cyclic number.

It is not a de Polignac number, because 20120232313 - 2¹⁷ = 20120101241 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20120230313) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 5035618 + ... + 5039611.

It is an arithmetic number, because the mean of its divisors is an integer number (5032577385).

Almost surely, 2^20120232313 is an apocalyptic number.

It is an amenable number.

20120232313 is a deficient number, since it is larger than the sum of its proper divisors (10077227).

20120232313 is a wasteful number, since it uses less digits than its factorization.

20120232313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10077226.

The product of its (nonzero) digits is 432, while the sum is 19.

Adding to 20120232313 its reverse (31323202102), we get a palindrome (51443434415).

The spelling of 20120232313 in words is "twenty billion, one hundred twenty million, two hundred thirty-two thousand, three hundred thirteen".