202123013 has 16 divisors (see below), whose sum is σ = 218661120. Its totient is φ = 186144000.

The previous prime is 202122959. The next prime is 202123027. The reversal of 202123013 is 310321202.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 202123013 - 2⁸ = 202122757 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 (202123093) 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, 181703 + ... + 182811.

It is an arithmetic number, because the mean of its divisors is an integer number (13666320).

Almost surely, 2^202123013 is an apocalyptic number.

It is an amenable number.

202123013 is a deficient number, since it is larger than the sum of its proper divisors (16538107).

202123013 is a wasteful number, since it uses less digits than its factorization.

202123013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1348.

The product of its (nonzero) digits is 72, while the sum is 14.

The square root of 202123013 is about 14216.9973271433. The cubic root of 202123013 is about 586.8655113595.

Adding to 202123013 its reverse (310321202), we get a palindrome (512444215).

The spelling of 202123013 in words is "two hundred two million, one hundred twenty-three thousand, thirteen".