20340203413 has 4 divisors (see below), whose sum is σ = 20530298880. Its totient is φ = 20150107948.

The previous prime is 20340203407. The next prime is 20340203431. The reversal of 20340203413 is 31430204302.

It is a happy number.

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 a cyclic number.

It is not a de Polignac number, because 20340203413 - 2⁵ = 20340203381 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 (20340303413) 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, 95047573 + ... + 95047786.

It is an arithmetic number, because the mean of its divisors is an integer number (5132574720).

Almost surely, 2^20340203413 is an apocalyptic number.

It is an amenable number.

20340203413 is a deficient number, since it is larger than the sum of its proper divisors (190095467).

20340203413 is a wasteful number, since it uses less digits than its factorization.

20340203413 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 190095466.

The product of its (nonzero) digits is 1728, while the sum is 22.

Adding to 20340203413 its reverse (31430204302), we get a palindrome (51770407715).

The spelling of 20340203413 in words is "twenty billion, three hundred forty million, two hundred three thousand, four hundred thirteen".