20403113343 has 4 divisors (see below), whose sum is σ = 27204151128. Its totient is φ = 13602075560.

The previous prime is 20403113257. The next prime is 20403113371. The reversal of 20403113343 is 34331130402.

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

It is a cyclic number.

It is not a de Polignac number, because 20403113343 - 2¹² = 20403109247 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20403133343) 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, 3400518888 + ... + 3400518893.

It is an arithmetic number, because the mean of its divisors is an integer number (6801037782).

Almost surely, 2^20403113343 is an apocalyptic number.

20403113343 is a deficient number, since it is larger than the sum of its proper divisors (6801037785).

20403113343 is an equidigital number, since it uses as much as digits as its factorization.

20403113343 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6801037784.

The product of its (nonzero) digits is 2592, while the sum is 24.

Adding to 20403113343 its reverse (34331130402), we get a palindrome (54734243745).

The spelling of 20403113343 in words is "twenty billion, four hundred three million, one hundred thirteen thousand, three hundred forty-three".