311313214 has 16 divisors (see below), whose sum is σ = 520462800. Its totient is φ = 138789504.

The previous prime is 311313181. The next prime is 311313241. The reversal of 311313214 is 412313113.

It is a super-2 number, since 2×311313214² = 193831834422019592, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is a junction number, because it is equal to n+sod(n) for n = 311313191 and 311313200.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 240309 + ... + 241600.

It is an arithmetic number, because the mean of its divisors is an integer number (32528925).

Almost surely, 2^311313214 is an apocalyptic number.

311313214 is a gapful number since it is divisible by the number (34) formed by its first and last digit.

311313214 is a deficient number, since it is larger than the sum of its proper divisors (209149586).

311313214 is a wasteful number, since it uses less digits than its factorization.

311313214 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 481947.

The product of its digits is 216, while the sum is 19.

The square root of 311313214 is about 17644.0702220321. The cubic root of 311313214 is about 677.7442656209.

Adding to 311313214 its reverse (412313113), we get a palindrome (723626327).

The spelling of 311313214 in words is "three hundred eleven million, three hundred thirteen thousand, two hundred fourteen".