213300020987 has 4 divisors (see below), whose sum is σ = 216915275640. Its totient is φ = 209684766336.

The previous prime is 213300020951. The next prime is 213300021007. The reversal of 213300020987 is 789020003312.

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 213300020987 - 2³⁴ = 196120151803 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (213300020917) 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, 1807627238 + ... + 1807627355.

It is an arithmetic number, because the mean of its divisors is an integer number (54228818910).

Almost surely, 2^213300020987 is an apocalyptic number.

213300020987 is a deficient number, since it is larger than the sum of its proper divisors (3615254653).

213300020987 is an equidigital number, since it uses as much as digits as its factorization.

213300020987 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3615254652.

The product of its (nonzero) digits is 18144, while the sum is 35.

The spelling of 213300020987 in words is "two hundred thirteen billion, three hundred million, twenty thousand, nine hundred eighty-seven".