229191313 has 4 divisors (see below), whose sum is σ = 246821428. Its totient is φ = 211561200.

The previous prime is 229191257. The next prime is 229191329. The reversal of 229191313 is 313191922.

229191313 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 24930049 + 204261264 = 4993^2 + 14292^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-229191313 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (229191373) 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, 8815038 + ... + 8815063.

It is an arithmetic number, because the mean of its divisors is an integer number (61705357).

Almost surely, 2^229191313 is an apocalyptic number.

It is an amenable number.

229191313 is a deficient number, since it is larger than the sum of its proper divisors (17630115).

229191313 is a wasteful number, since it uses less digits than its factorization.

229191313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17630114.

The product of its digits is 2916, while the sum is 31.

The square root of 229191313 is about 15139.0657901999. The cubic root of 229191313 is about 611.9736423709.

The spelling of 229191313 in words is "two hundred twenty-nine million, one hundred ninety-one thousand, three hundred thirteen".