20313133333313 has 4 divisors (see below), whose sum is σ = 20514253465428. Its totient is φ = 20112013201200.

The previous prime is 20313133333249. The next prime is 20313133333331. The reversal of 20313133333313 is 31333333131302.

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 18500940817984 + 1812192515329 = 4301272^2 + 1346177^2 .

It is a cyclic number.

It is not a de Polignac number, because 20313133333313 - 2⁶ = 20313133333249 is a prime.

It is a super-3 number, since 3×20313133333313³ (a number of 41 digits) contains 333 as substring.

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 20313133333313.

It is not an unprimeable number, because it can be changed into a prime (20313133338313) 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, 100560065906 + ... + 100560066107.

It is an arithmetic number, because the mean of its divisors is an integer number (5128563366357).

Almost surely, 2^{20313133333313} is an apocalyptic number.

It is an amenable number.

20313133333313 is a deficient number, since it is larger than the sum of its proper divisors (201120132115).

20313133333313 is a wasteful number, since it uses less digits than its factorization.

20313133333313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 201120132114.

The product of its (nonzero) digits is 39366, while the sum is 32.

Adding to 20313133333313 its reverse (31333333131302), we get a palindrome (51646466464615).

The spelling of 20313133333313 in words is "twenty trillion, three hundred thirteen billion, one hundred thirty-three million, three hundred thirty-three thousand, three hundred thirteen".