311432 has 16 divisors (see below), whose sum is σ = 637200. Its totient is φ = 141520.

The previous prime is 311419. The next prime is 311447. The reversal of 311432 is 234113.

It is a d-powerful number, because it can be written as 3⁷ + 1 + 4⁵ + 1 + 3¹¹ + 2¹⁷ .

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 311432.

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, 1682 + ... + 1857.

It is an arithmetic number, because the mean of its divisors is an integer number (39825).

2³¹¹⁴³² is an apocalyptic number.

It is an amenable number.

311432 is an abundant number, since it is smaller than the sum of its proper divisors (325768).

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

311432 is a wasteful number, since it uses less digits than its factorization.

311432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3556 (or 3552 counting only the distinct ones).

The product of its digits is 72, while the sum is 14.

The square root of 311432 is about 558.0609285732. The cubic root of 311432 is about 67.7830455659.

Adding to 311432 its reverse (234113), we get a palindrome (545545).

The spelling of 311432 in words is "three hundred eleven thousand, four hundred thirty-two".