213032087 has 4 divisors (see below), whose sum is σ = 214102800. Its totient is φ = 211961376.

The previous prime is 213031991. The next prime is 213032089. The reversal of 213032087 is 780230312.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-213032087 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 (213032089) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 535058 + ... + 535455.

It is an arithmetic number, because the mean of its divisors is an integer number (53525700).

Almost surely, 2^213032087 is an apocalyptic number.

213032087 is a deficient number, since it is larger than the sum of its proper divisors (1070713).

213032087 is a wasteful number, since it uses less digits than its factorization.

213032087 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1070712.

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

The square root of 213032087 is about 14595.6187604363. The cubic root of 213032087 is about 597.2392489802.

Adding to 213032087 its reverse (780230312), we get a palindrome (993262399).

The spelling of 213032087 in words is "two hundred thirteen million, thirty-two thousand, eighty-seven".