3123021213 has 24 divisors (see below), whose sum is σ = 5069256192. Its totient is φ = 1838298528.

The previous prime is 3123021179. The next prime is 3123021221. The reversal of 3123021213 is 3121203213.

3123021213 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 3123021213 - 2¹⁰ = 3123020189 is a prime.

It is a super-2 number, since 2×3123021213² = 19506522993695982738, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3123021233) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 577581 + ... + 582962.

It is an arithmetic number, because the mean of its divisors is an integer number (211219008).

Almost surely, 2^3123021213 is an apocalyptic number.

It is an amenable number.

3123021213 is a deficient number, since it is larger than the sum of its proper divisors (1946234979).

3123021213 is a wasteful number, since it uses less digits than its factorization.

3123021213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1160585 (or 1160582 counting only the distinct ones).

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

The square root of 3123021213 is about 55883.9978258535. The cubic root of 3123021213 is about 1461.7002168411.

Adding to 3123021213 its reverse (3121203213), we get a palindrome (6244224426).

The spelling of 3123021213 in words is "three billion, one hundred twenty-three million, twenty-one thousand, two hundred thirteen".