213321788587 has 2 divisors, whose sum is σ = 213321788588. Its totient is φ = 213321788586.

The previous prime is 213321788567. The next prime is 213321788657. The reversal of 213321788587 is 785887123312.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 213321788587 - 2¹¹ = 213321786539 is a prime.

It is not a weakly prime, because it can be changed into another prime (213321788557) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106660894293 + 106660894294.

It is an arithmetic number, because the mean of its divisors is an integer number (106660894294).

Almost surely, 2^213321788587 is an apocalyptic number.

213321788587 is a deficient number, since it is larger than the sum of its proper divisors (1).

213321788587 is an equidigital number, since it uses as much as digits as its factorization.

213321788587 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4515840, while the sum is 55.

The spelling of 213321788587 in words is "two hundred thirteen billion, three hundred twenty-one million, seven hundred eighty-eight thousand, five hundred eighty-seven".