311332 has 12 divisors (see below), whose sum is σ = 622720. Its totient is φ = 133416.

The previous prime is 311329. The next prime is 311341. The reversal of 311332 is 233113.

311332 is an admirable number.

It is a super-2 number, since 2×311332² = 193855228448, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5532 + ... + 5587.

2³¹¹³³² is an apocalyptic number.

It is an amenable number.

311332 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

311332 is a wasteful number, since it uses less digits than its factorization.

311332 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11130 (or 11128 counting only the distinct ones).

The product of its digits is 54, while the sum is 13.

The square root of 311332 is about 557.9713254281. The cubic root of 311332 is about 67.7757898030.

Adding to 311332 its reverse (233113), we get a palindrome (544445).

The spelling of 311332 in words is "three hundred eleven thousand, three hundred thirty-two".