311422056 has 64 divisors (see below), whose sum is σ = 856440000. Its totient is φ = 94360640.

The previous prime is 311422049. The next prime is 311422057. The reversal of 311422056 is 650224113.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is not an unprimeable number, because it can be changed into a prime (311422057) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 27070 + ... + 36818.

It is an arithmetic number, because the mean of its divisors is an integer number (13381875).

Almost surely, 2^311422056 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 311422056, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (428220000).

311422056 is an abundant number, since it is smaller than the sum of its proper divisors (545017944).

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

311422056 is a wasteful number, since it uses less digits than its factorization.

311422056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9791 (or 9765 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 24.

The square root of 311422056 is about 17647.1543315063. The cubic root of 311422056 is about 677.8232412236.

Adding to 311422056 its reverse (650224113), we get a palindrome (961646169).

The spelling of 311422056 in words is "three hundred eleven million, four hundred twenty-two thousand, fifty-six".