213287308 has 12 divisors (see below), whose sum is σ = 401964640. Its totient is φ = 98440272.

The previous prime is 213287297. The next prime is 213287309. The reversal of 213287308 is 803782312.

It is a hoax number, since the sum of its digits (34) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (213287309) 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, 2050788 + ... + 2050891.

Almost surely, 2^213287308 is an apocalyptic number.

It is an amenable number.

213287308 is a deficient number, since it is larger than the sum of its proper divisors (188677332).

213287308 is a wasteful number, since it uses less digits than its factorization.

213287308 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4101696 (or 4101694 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 34.

The square root of 213287308 is about 14604.3592122352. The cubic root of 213287308 is about 597.4776593364.

The spelling of 213287308 in words is "two hundred thirteen million, two hundred eighty-seven thousand, three hundred eight".