202002312013 has 4 divisors (see below), whose sum is σ = 203118347068. Its totient is φ = 200886276960.

The previous prime is 202002311969. The next prime is 202002312023. The reversal of 202002312013 is 310213200202.

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

It can be written as a sum of positive squares in 2 ways, for example, as 28157511204 + 173844800809 = 167802^2 + 416947^2 .

It is a cyclic number.

It is not a de Polignac number, because 202002312013 - 2²⁵ = 201968757581 is a prime.

It is a super-2 number, since 2×202002312013² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (202002312023) 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, 558017256 + ... + 558017617.

It is an arithmetic number, because the mean of its divisors is an integer number (50779586767).

Almost surely, 2^202002312013 is an apocalyptic number.

It is an amenable number.

202002312013 is a deficient number, since it is larger than the sum of its proper divisors (1116035055).

202002312013 is a wasteful number, since it uses less digits than its factorization.

202002312013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1116035054.

The product of its (nonzero) digits is 144, while the sum is 16.

Adding to 202002312013 its reverse (310213200202), we get a palindrome (512215512215).

The spelling of 202002312013 in words is "two hundred two billion, two million, three hundred twelve thousand, thirteen".