201340334423 has 4 divisors (see below), whose sum is σ = 203122107408. Its totient is φ = 199558561440.

The previous prime is 201340334417. The next prime is 201340334443. The reversal of 201340334423 is 324433043102.

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 201340334423 - 2¹⁶ = 201340268887 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 (201340334443) 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, 890886323 + ... + 890886548.

It is an arithmetic number, because the mean of its divisors is an integer number (50780526852).

Almost surely, 2^201340334423 is an apocalyptic number.

201340334423 is a deficient number, since it is larger than the sum of its proper divisors (1781772985).

201340334423 is a wasteful number, since it uses less digits than its factorization.

201340334423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1781772984.

The product of its (nonzero) digits is 20736, while the sum is 29.

Adding to 201340334423 its reverse (324433043102), we get a palindrome (525773377525).

The spelling of 201340334423 in words is "two hundred one billion, three hundred forty million, three hundred thirty-four thousand, four hundred twenty-three".