331204340 has 24 divisors (see below), whose sum is σ = 704336640. Its totient is φ = 130804128.

The previous prime is 331204327. The next prime is 331204373. The reversal of 331204340 is 43402133.

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 polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 103232 + ... + 106391.

It is an arithmetic number, because the mean of its divisors is an integer number (29347360).

Almost surely, 2^331204340 is an apocalyptic number.

It is an amenable number.

331204340 is an abundant number, since it is smaller than the sum of its proper divisors (373132300).

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

331204340 is a wasteful number, since it uses less digits than its factorization.

331204340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 209711 (or 209709 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 20.

The square root of 331204340 is about 18199.0203033020. The cubic root of 331204340 is about 691.8819588827.

Adding to 331204340 its reverse (43402133), we get a palindrome (374606473).

The spelling of 331204340 in words is "three hundred thirty-one million, two hundred four thousand, three hundred forty".