213899113 has 4 divisors (see below), whose sum is σ = 216017028. Its totient is φ = 211781200.

The previous prime is 213899107. The next prime is 213899137. The reversal of 213899113 is 311998312.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 157828969 + 56070144 = 12563^2 + 7488^2 .

It is a cyclic number.

It is not a de Polignac number, because 213899113 - 2¹⁷ = 213768041 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (213899143) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1058806 + ... + 1059007.

It is an arithmetic number, because the mean of its divisors is an integer number (54004257).

Almost surely, 2^213899113 is an apocalyptic number.

It is an amenable number.

213899113 is a deficient number, since it is larger than the sum of its proper divisors (2117915).

213899113 is a wasteful number, since it uses less digits than its factorization.

213899113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2117914.

The product of its digits is 11664, while the sum is 37.

The square root of 213899113 is about 14625.2901851553. The cubic root of 213899113 is about 598.0483931933.

The spelling of 213899113 in words is "two hundred thirteen million, eight hundred ninety-nine thousand, one hundred thirteen".