20403334103213 has 16 divisors (see below), whose sum is σ = 20993677879680. Its totient is φ = 19815065919936.

The previous prime is 20403334103209. The next prime is 20403334103297. The reversal of 20403334103213 is 31230143330402.

It is a cyclic number.

It is not a de Polignac number, because 20403334103213 - 2² = 20403334103209 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20403334103513) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 52435070 + ... + 52822752.

It is an arithmetic number, because the mean of its divisors is an integer number (1312104867480).

Almost surely, 2^{20403334103213} is an apocalyptic number.

It is an amenable number.

20403334103213 is a deficient number, since it is larger than the sum of its proper divisors (590343776467).

20403334103213 is a wasteful number, since it uses less digits than its factorization.

20403334103213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 390356.

The product of its (nonzero) digits is 15552, while the sum is 29.

Adding to 20403334103213 its reverse (31230143330402), we get a palindrome (51633477433615).

The spelling of 20403334103213 in words is "twenty trillion, four hundred three billion, three hundred thirty-four million, one hundred three thousand, two hundred thirteen".