2313202021 has 4 divisors (see below), whose sum is σ = 2491140652. Its totient is φ = 2135263392.

The previous prime is 2313202007. The next prime is 2313202103. The reversal of 2313202021 is 1202023132.

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 442639521 + 1870562500 = 21039^2 + 43250^2 .

It is a cyclic number.

It is not a de Polignac number, because 2313202021 - 2¹⁹ = 2312677733 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2313201986 and 2313202004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2313202421) 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, 88969296 + ... + 88969321.

It is an arithmetic number, because the mean of its divisors is an integer number (622785163).

Almost surely, 2^2313202021 is an apocalyptic number.

It is an amenable number.

2313202021 is a deficient number, since it is larger than the sum of its proper divisors (177938631).

2313202021 is a wasteful number, since it uses less digits than its factorization.

2313202021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 177938630.

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

The square root of 2313202021 is about 48095.7588670768. The cubic root of 2313202021 is about 1322.5269205250.

Adding to 2313202021 its reverse (1202023132), we get a palindrome (3515225153).

The spelling of 2313202021 in words is "two billion, three hundred thirteen million, two hundred two thousand, twenty-one".