213107015 has 24 divisors (see below), whose sum is σ = 282945264. Its totient is φ = 153964800.

The previous prime is 213106981. The next prime is 213107017. The reversal of 213107015 is 510701312.

213107015 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 213107015 - 2¹⁸ = 212844871 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213107017) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 97535 + ... + 99695.

It is an arithmetic number, because the mean of its divisors is an integer number (11789386).

Almost surely, 2^213107015 is an apocalyptic number.

213107015 is a deficient number, since it is larger than the sum of its proper divisors (69838249).

213107015 is a wasteful number, since it uses less digits than its factorization.

213107015 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2351 (or 2340 counting only the distinct ones).

The product of its (nonzero) digits is 210, while the sum is 20.

The square root of 213107015 is about 14598.1853324309. The cubic root of 213107015 is about 597.3092614332.

Adding to 213107015 its reverse (510701312), we get a palindrome (723808327).

The spelling of 213107015 in words is "two hundred thirteen million, one hundred seven thousand, fifteen".