311320014 has 16 divisors (see below), whose sum is σ = 659266128. Its totient is φ = 97668992.

The previous prime is 311320013. The next prime is 311320021. The reversal of 311320014 is 410023113.

It is a super-2 number, since 2×311320014² = 193840302233920392, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 311319975 and 311320002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (311320013) 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, 1525977 + ... + 1526180.

It is an arithmetic number, because the mean of its divisors is an integer number (41204133).

Almost surely, 2^311320014 is an apocalyptic number.

311320014 is a gapful number since it is divisible by the number (34) formed by its first and last digit.

311320014 is an abundant number, since it is smaller than the sum of its proper divisors (347946114).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

311320014 is a wasteful number, since it uses less digits than its factorization.

311320014 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3052179.

The product of its (nonzero) digits is 72, while the sum is 15.

The square root of 311320014 is about 17644.2629202809. The cubic root of 311320014 is about 677.7492002304.

Adding to 311320014 its reverse (410023113), we get a palindrome (721343127).

The spelling of 311320014 in words is "three hundred eleven million, three hundred twenty thousand, fourteen".