20131213199 has 4 divisors (see below), whose sum is σ = 20133175536. Its totient is φ = 20129250864.

The previous prime is 20131213181. The next prime is 20131213211. The reversal of 20131213199 is 99131213102.

It is a happy number.

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-20131213199 is a prime.

It is a super-3 number, since 3×20131213199³ (a number of 32 digits) contains 333 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 (20131213129) 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, 965699 + ... + 986324.

It is an arithmetic number, because the mean of its divisors is an integer number (5033293884).

Almost surely, 2^20131213199 is an apocalyptic number.

20131213199 is a deficient number, since it is larger than the sum of its proper divisors (1962337).

20131213199 is a wasteful number, since it uses less digits than its factorization.

20131213199 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1962336.

The product of its (nonzero) digits is 2916, while the sum is 32.

The spelling of 20131213199 in words is "twenty billion, one hundred thirty-one million, two hundred thirteen thousand, one hundred ninety-nine".