213087007 has 4 divisors (see below), whose sum is σ = 243528016. Its totient is φ = 182646000.

The previous prime is 213086941. The next prime is 213087013. The reversal of 213087007 is 700780312.

It is a happy number.

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 213087007 - 2⁷ = 213086879 is a prime.

It is the 14598-th Hogben number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213087037) by changing a digit.

It is a nontrivial repunit in base 14597.

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, 15220494 + ... + 15220507.

It is an arithmetic number, because the mean of its divisors is an integer number (60882004).

Almost surely, 2^213087007 is an apocalyptic number.

213087007 is a deficient number, since it is larger than the sum of its proper divisors (30441009).

213087007 is an equidigital number, since it uses as much as digits as its factorization.

213087007 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30441008.

The product of its (nonzero) digits is 2352, while the sum is 28.

The square root of 213087007 is about 14597.5000256893. The cubic root of 213087007 is about 597.2905676364.

The spelling of 213087007 in words is "two hundred thirteen million, eighty-seven thousand, seven".