20213342440313 has 4 divisors (see below), whose sum is σ = 22050919025808. Its totient is φ = 18375765854820.

The previous prime is 20213342440309. The next prime is 20213342440321. The reversal of 20213342440313 is 31304424331202.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 20213342440313 - 2² = 20213342440309 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 20213342440313.

It is not an unprimeable number, because it can be changed into a prime (20218342440313) 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, 918788292731 + ... + 918788292752.

It is an arithmetic number, because the mean of its divisors is an integer number (5512729756452).

Almost surely, 2^{20213342440313} is an apocalyptic number.

It is an amenable number.

20213342440313 is a deficient number, since it is larger than the sum of its proper divisors (1837576585495).

20213342440313 is a wasteful number, since it uses less digits than its factorization.

20213342440313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1837576585494.

The product of its (nonzero) digits is 41472, while the sum is 32.

Adding to 20213342440313 its reverse (31304424331202), we get a palindrome (51517766771515).

The spelling of 20213342440313 in words is "twenty trillion, two hundred thirteen billion, three hundred forty-two million, four hundred forty thousand, three hundred thirteen".