2221031313 has 32 divisors (see below), whose sum is σ = 3373708800. Its totient is φ = 1443346128.

The previous prime is 2221031311. The next prime is 2221031327. The reversal of 2221031313 is 3131301222.

It is not a de Polignac number, because 2221031313 - 2¹ = 2221031311 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2221031311) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 679878 + ... + 683136.

It is an arithmetic number, because the mean of its divisors is an integer number (105428400).

Almost surely, 2^2221031313 is an apocalyptic number.

It is an amenable number.

2221031313 is a deficient number, since it is larger than the sum of its proper divisors (1152677487).

2221031313 is a wasteful number, since it uses less digits than its factorization.

2221031313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3898 (or 3892 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

The square root of 2221031313 is about 47127.8188865133. The cubic root of 2221031313 is about 1304.7227261359.

Adding to 2221031313 its reverse (3131301222), we get a palindrome (5352332535).

The spelling of 2221031313 in words is "two billion, two hundred twenty-one million, thirty-one thousand, three hundred thirteen".