213513212 has 36 divisors (see below), whose sum is σ = 417721080. Its totient is φ = 95393760.

The previous prime is 213513197. The next prime is 213513229. The reversal of 213513212 is 212315312.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 24818 + ... + 32294.

Almost surely, 2^213513212 is an apocalyptic number.

213513212 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

213513212 is a deficient number, since it is larger than the sum of its proper divisors (204207868).

213513212 is a wasteful number, since it uses less digits than its factorization.

213513212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7562 (or 7549 counting only the distinct ones).

The product of its digits is 360, while the sum is 20.

The square root of 213513212 is about 14612.0912945410. The cubic root of 213513212 is about 597.6885250933.

Adding to 213513212 its reverse (212315312), we get a palindrome (425828524).

The spelling of 213513212 in words is "two hundred thirteen million, five hundred thirteen thousand, two hundred twelve".