213012015 has 16 divisors (see below), whose sum is σ = 349132896. Its totient is φ = 110835200.

The previous prime is 213012011. The next prime is 213012043. The reversal of 213012015 is 510210312.

It is not a de Polignac number, because 213012015 - 2² = 213012011 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a junction number, because it is equal to n+sod(n) for n = 213011985 and 213012003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213012011) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 172566 + ... + 173795.

It is an arithmetic number, because the mean of its divisors is an integer number (21820806).

Almost surely, 2^213012015 is an apocalyptic number.

213012015 is a deficient number, since it is larger than the sum of its proper divisors (136120881).

213012015 is a wasteful number, since it uses less digits than its factorization.

213012015 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 346410.

The product of its (nonzero) digits is 60, while the sum is 15.

The square root of 213012015 is about 14594.9311406392. The cubic root of 213012015 is about 597.2204909879.

Adding to 213012015 its reverse (510210312), we get a palindrome (723222327).

The spelling of 213012015 in words is "two hundred thirteen million, twelve thousand, fifteen".