213545867 has 2 divisors, whose sum is σ = 213545868. Its totient is φ = 213545866.

The previous prime is 213545809. The next prime is 213545881. The reversal of 213545867 is 768545312.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 213545867 - 2¹⁴ = 213529483 is a prime.

It is not a weakly prime, because it can be changed into another prime (213545897) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106772933 + 106772934.

It is an arithmetic number, because the mean of its divisors is an integer number (106772934).

Almost surely, 2^213545867 is an apocalyptic number.

213545867 is a deficient number, since it is larger than the sum of its proper divisors (1).

213545867 is an equidigital number, since it uses as much as digits as its factorization.

213545867 is an evil number, because the sum of its binary digits is even.

The product of its digits is 201600, while the sum is 41.

The square root of 213545867 is about 14613.2086483428. The cubic root of 213545867 is about 597.7189939711.

It can be divided in two parts, 213545 and 867, that added together give a palindrome (214412).

The spelling of 213545867 in words is "two hundred thirteen million, five hundred forty-five thousand, eight hundred sixty-seven".