311132213 has 32 divisors (see below), whose sum is σ = 387840000. Its totient is φ = 248935680.

The previous prime is 311132197. The next prime is 311132273. The reversal of 311132213 is 312231113.

It is not a de Polignac number, because 311132213 - 2⁴ = 311132197 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 311132191 and 311132200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (311132273) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 307853 + ... + 308861.

It is an arithmetic number, because the mean of its divisors is an integer number (12120000).

Almost surely, 2^311132213 is an apocalyptic number.

It is an amenable number.

311132213 is a deficient number, since it is larger than the sum of its proper divisors (76707787).

311132213 is a wasteful number, since it uses less digits than its factorization.

311132213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1090 (or 1076 counting only the distinct ones).

The product of its digits is 108, while the sum is 17.

The square root of 311132213 is about 17638.9402459445. The cubic root of 311132213 is about 677.6128907800.

Adding to 311132213 its reverse (312231113), we get a palindrome (623363326).

The spelling of 311132213 in words is "three hundred eleven million, one hundred thirty-two thousand, two hundred thirteen".