3113721213 has 8 divisors (see below), whose sum is σ = 4294788000. Its totient is φ = 2004234288.

The previous prime is 3113721211. The next prime is 3113721227. The reversal of 3113721213 is 3121273113.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 3113721213 - 2¹ = 3113721211 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3113721211) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17894863 + ... + 17895036.

It is an arithmetic number, because the mean of its divisors is an integer number (536848500).

Almost surely, 2^3113721213 is an apocalyptic number.

It is an amenable number.

3113721213 is a deficient number, since it is larger than the sum of its proper divisors (1181066787).

3113721213 is a wasteful number, since it uses less digits than its factorization.

3113721213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35789931.

The product of its digits is 756, while the sum is 24.

The square root of 3113721213 is about 55800.7277103086. The cubic root of 3113721213 is about 1460.2478488656.

Adding to 3113721213 its reverse (3121273113), we get a palindrome (6234994326).

The spelling of 3113721213 in words is "three billion, one hundred thirteen million, seven hundred twenty-one thousand, two hundred thirteen".