331132340 has 96 divisors (see below), whose sum is σ = 883540224. Its totient is φ = 101237760.

The previous prime is 331132337. The next prime is 331132387. The reversal of 331132340 is 43231133.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 79592 + ... + 83648.

It is an arithmetic number, because the mean of its divisors is an integer number (9203544).

Almost surely, 2^331132340 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 331132340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (441770112).

331132340 is an abundant number, since it is smaller than the sum of its proper divisors (552407884).

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

331132340 is a wasteful number, since it uses less digits than its factorization.

331132340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4137 (or 4135 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 20.

The square root of 331132340 is about 18197.0420673251. The cubic root of 331132340 is about 691.8318195325.

Adding to 331132340 its reverse (43231133), we get a palindrome (374363473).

It can be divided in two parts, 33113 and 2340, that added together give a palindrome (35453).

The spelling of 331132340 in words is "three hundred thirty-one million, one hundred thirty-two thousand, three hundred forty".