2313211021 has 16 divisors (see below), whose sum is σ = 2600615808. Its totient is φ = 2039276800.

The previous prime is 2313211007. The next prime is 2313211057. The reversal of 2313211021 is 1201123132.

It is not a de Polignac number, because 2313211021 - 2⁹ = 2313210509 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2313210986 and 2313211004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2313211081) 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, 59961 + ... + 90673.

It is an arithmetic number, because the mean of its divisors is an integer number (162538488).

Almost surely, 2^2313211021 is an apocalyptic number.

It is an amenable number.

2313211021 is a deficient number, since it is larger than the sum of its proper divisors (287404787).

2313211021 is a wasteful number, since it uses less digits than its factorization.

2313211021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30932.

The product of its (nonzero) digits is 72, while the sum is 16.

The square root of 2313211021 is about 48095.8524303292. The cubic root of 2313211021 is about 1322.5286357127.

Adding to 2313211021 its reverse (1201123132), we get a palindrome (3514334153).

The spelling of 2313211021 in words is "two billion, three hundred thirteen million, two hundred eleven thousand, twenty-one".