213787315 has 32 divisors (see below), whose sum is σ = 305750016. Its totient is φ = 140417280.

The previous prime is 213787313. The next prime is 213787337. The reversal of 213787315 is 513787312.

It is not a de Polignac number, because 213787315 - 2¹ = 213787313 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (213787313) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 110799 + ... + 112711.

It is an arithmetic number, because the mean of its divisors is an integer number (9554688).

Almost surely, 2^213787315 is an apocalyptic number.

213787315 is a deficient number, since it is larger than the sum of its proper divisors (91962701).

213787315 is a wasteful number, since it uses less digits than its factorization.

213787315 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2059.

The product of its digits is 35280, while the sum is 37.

The square root of 213787315 is about 14621.4676075967. The cubic root of 213787315 is about 597.9441816559.

The spelling of 213787315 in words is "two hundred thirteen million, seven hundred eighty-seven thousand, three hundred fifteen".