313211111 has 8 divisors (see below), whose sum is σ = 331865280. Its totient is φ = 294582528.

The previous prime is 313211069. The next prime is 313211147. The reversal of 313211111 is 111112313.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 313211111 - 2¹⁰ = 313210087 is a prime.

It is a Duffinian number.

313211111 is a modest number, since divided by 11111 gives 3132 as remainder.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (313211161) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22610 + ... + 33728.

It is an arithmetic number, because the mean of its divisors is an integer number (41483160).

Almost surely, 2^313211111 is an apocalyptic number.

313211111 is a deficient number, since it is larger than the sum of its proper divisors (18654169).

313211111 is a wasteful number, since it uses less digits than its factorization.

313211111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12793.

The product of its digits is 18, while the sum is 14.

The square root of 313211111 is about 17697.7713568686. The cubic root of 313211111 is about 679.1187481333.

Adding to 313211111 its reverse (111112313), we get a palindrome (424323424).

The spelling of 313211111 in words is "three hundred thirteen million, two hundred eleven thousand, one hundred eleven".