213701563 has 2 divisors, whose sum is σ = 213701564. Its totient is φ = 213701562.

The previous prime is 213701497. The next prime is 213701597. The reversal of 213701563 is 365107312.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 213701563 - 2⁹ = 213701051 is a prime.

It is not a weakly prime, because it can be changed into another prime (213701263) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106850781 + 106850782.

It is an arithmetic number, because the mean of its divisors is an integer number (106850782).

Almost surely, 2^213701563 is an apocalyptic number.

213701563 is a deficient number, since it is larger than the sum of its proper divisors (1).

213701563 is an equidigital number, since it uses as much as digits as its factorization.

213701563 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3780, while the sum is 28.

The square root of 213701563 is about 14618.5349129111. The cubic root of 213701563 is about 597.8642240485.

Adding to 213701563 its reverse (365107312), we get a palindrome (578808875).

The spelling of 213701563 in words is "two hundred thirteen million, seven hundred one thousand, five hundred sixty-three".