213287307 has 8 divisors (see below), whose sum is σ = 284454720. Its totient is φ = 142155720.

The previous prime is 213287297. The next prime is 213287309. The reversal of 213287307 is 703782312.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 213287307 - 2⁸ = 213287051 is a prime.

It is not an unprimeable number, because it can be changed into a prime (213287309) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11832 + ... + 23802.

It is an arithmetic number, because the mean of its divisors is an integer number (35556840).

Almost surely, 2^213287307 is an apocalyptic number.

213287307 is a deficient number, since it is larger than the sum of its proper divisors (71167413).

213287307 is a wasteful number, since it uses less digits than its factorization.

213287307 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17913.

The product of its (nonzero) digits is 14112, while the sum is 33.

The square root of 213287307 is about 14604.3591779989. The cubic root of 213287307 is about 597.4776584026.

The spelling of 213287307 in words is "two hundred thirteen million, two hundred eighty-seven thousand, three hundred seven".