12020323319 has 4 divisors (see below), whose sum is σ = 12542946096. Its totient is φ = 11497700544.

The previous prime is 12020323177. The next prime is 12020323321. The reversal of 12020323319 is 91332302021.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12020323319 is a prime.

It is a super-2 number, since 2×12020323319² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12020623319) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 261311354 + ... + 261311399.

It is an arithmetic number, because the mean of its divisors is an integer number (3135736524).

Almost surely, 2^12020323319 is an apocalyptic number.

12020323319 is a deficient number, since it is larger than the sum of its proper divisors (522622777).

12020323319 is an equidigital number, since it uses as much as digits as its factorization.

12020323319 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 522622776.

The product of its (nonzero) digits is 1944, while the sum is 26.

The spelling of 12020323319 in words is "twelve billion, twenty million, three hundred twenty-three thousand, three hundred nineteen".