213023087 has 4 divisors (see below), whose sum is σ = 213139416. Its totient is φ = 212906760.

The previous prime is 213023071. The next prime is 213023089. The reversal of 213023087 is 780320312.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 213023087 - 2⁴ = 213023071 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 (213023089) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 55373 + ... + 59094.

It is an arithmetic number, because the mean of its divisors is an integer number (53284854).

Almost surely, 2^213023087 is an apocalyptic number.

213023087 is a deficient number, since it is larger than the sum of its proper divisors (116329).

213023087 is a wasteful number, since it uses less digits than its factorization.

213023087 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 116328.

The product of its (nonzero) digits is 2016, while the sum is 26.

The square root of 213023087 is about 14595.3104454821. The cubic root of 213023087 is about 597.2308383083.

Adding to 213023087 its reverse (780320312), we get a palindrome (993343399).

It can be divided in two parts, 21302 and 3087, that added together give a cube (24389 = 29³).

The spelling of 213023087 in words is "two hundred thirteen million, twenty-three thousand, eighty-seven".