3121330213 has 16 divisors (see below), whose sum is σ = 3183206400. Its totient is φ = 3060270720.

The previous prime is 3121330189. The next prime is 3121330259. The reversal of 3121330213 is 3120331213.

It is a cyclic number.

It is not a de Polignac number, because 3121330213 - 2¹³ = 3121322021 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3121334213) 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, 6516108 + ... + 6516586.

It is an arithmetic number, because the mean of its divisors is an integer number (198950400).

Almost surely, 2^3121330213 is an apocalyptic number.

It is an amenable number.

3121330213 is a deficient number, since it is larger than the sum of its proper divisors (61876187).

3121330213 is a wasteful number, since it uses less digits than its factorization.

3121330213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1092.

The product of its (nonzero) digits is 324, while the sum is 19.

The square root of 3121330213 is about 55868.8662226110. The cubic root of 3121330213 is about 1461.4363504172.

Adding to 3121330213 its reverse (3120331213), we get a palindrome (6241661426).

The spelling of 3121330213 in words is "three billion, one hundred twenty-one million, three hundred thirty thousand, two hundred thirteen".