311113320 has 64 divisors (see below), whose sum is σ = 1066677120. Its totient is φ = 71111424.

The previous prime is 311113301. The next prime is 311113331. The reversal of 311113320 is 23311113.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 311113320.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 184347 + ... + 186026.

It is an arithmetic number, because the mean of its divisors is an integer number (16666830).

Almost surely, 2^311113320 is an apocalyptic number.

311113320 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

311113320 is an abundant number, since it is smaller than the sum of its proper divisors (755563800).

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

311113320 is a wasteful number, since it uses less digits than its factorization.

311113320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 370394 (or 370390 counting only the distinct ones).

The product of its (nonzero) digits is 54, while the sum is 15.

The square root of 311113320 is about 17638.4046897672. The cubic root of 311113320 is about 677.5991748537.

Adding to 311113320 its reverse (23311113), we get a palindrome (334424433).

The spelling of 311113320 in words is "three hundred eleven million, one hundred thirteen thousand, three hundred twenty".