311200213 has 4 divisors (see below), whose sum is σ = 311256000. Its totient is φ = 311144428.

The previous prime is 311200199. The next prime is 311200231. The reversal of 311200213 is 312002113.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 312002113 = 211 ⋅1478683.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-311200213 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 311200193 and 311200202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (311200243) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18463 + ... + 31036.

It is an arithmetic number, because the mean of its divisors is an integer number (77814000).

Almost surely, 2^311200213 is an apocalyptic number.

It is an amenable number.

311200213 is a deficient number, since it is larger than the sum of its proper divisors (55787).

311200213 is an equidigital number, since it uses as much as digits as its factorization.

311200213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55786.

The product of its (nonzero) digits is 36, while the sum is 13.

The square root of 311200213 is about 17640.8676940790. The cubic root of 311200213 is about 677.6622527749.

Adding to 311200213 its reverse (312002113), we get a palindrome (623202326).

The spelling of 311200213 in words is "three hundred eleven million, two hundred thousand, two hundred thirteen".