3213136 has 20 divisors (see below), whose sum is σ = 6592212. Its totient is φ = 1511936.

The previous prime is 3213131. The next prime is 3213137. The reversal of 3213136 is 6313123.

It can be written as a sum of positive squares in 2 ways, for example, as 1904400 + 1308736 = 1380^2 + 1144^2 .

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3213131) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5635 + ... + 6178.

Almost surely, 2^3213136 is an apocalyptic number.

It is an amenable number.

3213136 is an abundant number, since it is smaller than the sum of its proper divisors (3379076).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

3213136 is a wasteful number, since it uses less digits than its factorization.

3213136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11838 (or 11832 counting only the distinct ones).

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

The square root of 3213136 is about 1792.5222453292. The cubic root of 3213136 is about 147.5626239873.

Adding to 3213136 its reverse (6313123), we get a palindrome (9526259).

The spelling of 3213136 in words is "three million, two hundred thirteen thousand, one hundred thirty-six".