3081213 has 16 divisors (see below), whose sum is σ = 4603200. Its totient is φ = 2036880.

The previous prime is 3081203. The next prime is 3081217. The reversal of 3081213 is 3121803.

It is not a de Polignac number, because 3081213 - 2⁵ = 3081181 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3081217) 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, 3343 + ... + 4163.

It is an arithmetic number, because the mean of its divisors is an integer number (287700).

Almost surely, 2^3081213 is an apocalyptic number.

It is an amenable number.

3081213 is a deficient number, since it is larger than the sum of its proper divisors (1521987).

3081213 is a wasteful number, since it uses less digits than its factorization.

3081213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 969 (or 963 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

The square root of 3081213 is about 1755.3384289077. The cubic root of 3081213 is about 145.5148247197.

It can be divided in two parts, 308 and 1213, that added together give a square (1521 = 39²).

The spelling of 3081213 in words is "three million, eighty-one thousand, two hundred thirteen".