2513303221 has 12 divisors (see below), whose sum is σ = 2975062636. Its totient is φ = 2109064320.

The previous prime is 2513303161. The next prime is 2513303231. The reversal of 2513303221 is 1223033152.

It can be written as a sum of positive squares in 2 ways, for example, as 1723412196 + 789891025 = 41514^2 + 28105^2 .

It is not a de Polignac number, because 2513303221 - 2²¹ = 2511206069 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2513303192 and 2513303201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2513303231) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 797316 + ... + 800461.

Almost surely, 2^2513303221 is an apocalyptic number.

It is an amenable number.

2513303221 is a deficient number, since it is larger than the sum of its proper divisors (461759415).

2513303221 is a wasteful number, since it uses less digits than its factorization.

2513303221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1597812 (or 1597801 counting only the distinct ones).

The product of its (nonzero) digits is 1080, while the sum is 22.

The square root of 2513303221 is about 50132.8557036202. The cubic root of 2513303221 is about 1359.6119172753.

Adding to 2513303221 its reverse (1223033152), we get a palindrome (3736336373).

The spelling of 2513303221 in words is "two billion, five hundred thirteen million, three hundred three thousand, two hundred twenty-one".