331022340 has 144 divisors (see below), whose sum is σ = 1130927616. Its totient is φ = 77644800.

The previous prime is 331022339. The next prime is 331022353. The reversal of 331022340 is 43220133.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 58684 + ... + 64076.

It is an arithmetic number, because the mean of its divisors is an integer number (7853664).

Almost surely, 2^331022340 is an apocalyptic number.

331022340 is a gapful number since it is divisible by the number (30) 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 331022340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (565463808).

331022340 is an abundant number, since it is smaller than the sum of its proper divisors (799905276).

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

331022340 is a wasteful number, since it uses less digits than its factorization.

331022340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5450 (or 5445 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 18.

The square root of 331022340 is about 18194.0193470272. The cubic root of 331022340 is about 691.7552037112.

Adding to 331022340 its reverse (43220133), we get a palindrome (374242473).

The spelling of 331022340 in words is "three hundred thirty-one million, twenty-two thousand, three hundred forty".