311283396 has 72 divisors (see below), whose sum is σ = 837817344. Its totient is φ = 97109760.

The previous prime is 311283391. The next prime is 311283409. The reversal of 311283396 is 693382113.

311283396 is a `hidden beast` number, since 311 + 2 + 8 + 339 + 6 = 666.

311283396 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 311283396.

It is not an unprimeable number, because it can be changed into a prime (311283391) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 115561 + ... + 118223.

It is an arithmetic number, because the mean of its divisors is an integer number (11636352).

Almost surely, 2^311283396 is an apocalyptic number.

311283396 is a gapful number since it is divisible by the number (36) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 311283396, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (418908672).

311283396 is an abundant number, since it is smaller than the sum of its proper divisors (526533948).

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

311283396 is a wasteful number, since it uses less digits than its factorization.

311283396 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2881 (or 2876 counting only the distinct ones).

The product of its digits is 23328, while the sum is 36.

The square root of 311283396 is about 17643.2252153624. The cubic root of 311283396 is about 677.7226265097.

The spelling of 311283396 in words is "three hundred eleven million, two hundred eighty-three thousand, three hundred ninety-six".