202013423 has 4 divisors (see below), whose sum is σ = 202049040. Its totient is φ = 201977808.

The previous prime is 202013419. The next prime is 202013477. The reversal of 202013423 is 324310202.

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 202013423 - 2² = 202013419 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 (202013323) 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, 7190 + ... + 21347.

It is an arithmetic number, because the mean of its divisors is an integer number (50512260).

Almost surely, 2^202013423 is an apocalyptic number.

202013423 is a deficient number, since it is larger than the sum of its proper divisors (35617).

202013423 is an equidigital number, since it uses as much as digits as its factorization.

202013423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35616.

The product of its (nonzero) digits is 288, while the sum is 17.

The square root of 202013423 is about 14213.1426151995. The cubic root of 202013423 is about 586.7594270867.

Adding to 202013423 its reverse (324310202), we get a palindrome (526323625).

The spelling of 202013423 in words is "two hundred two million, thirteen thousand, four hundred twenty-three".