331148646 has 24 divisors (see below), whose sum is σ = 717968784. Its totient is φ = 110309040.

The previous prime is 331148617. The next prime is 331148683. The reversal of 331148646 is 646841133.

It is a happy number.

331148646 is a `hidden beast` number, since 3 + 3 + 1 + 1 + 4 + 8 + 646 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 331148646.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 26055 + ... + 36621.

It is an arithmetic number, because the mean of its divisors is an integer number (29915366).

Almost surely, 2^331148646 is an apocalyptic number.

331148646 is an abundant number, since it is smaller than the sum of its proper divisors (386820138).

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

331148646 is a wasteful number, since it uses less digits than its factorization.

331148646 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12316 (or 12313 counting only the distinct ones).

The product of its digits is 41472, while the sum is 36.

The square root of 331148646 is about 18197.4901016596. The cubic root of 331148646 is about 691.8431753391.

Adding to 331148646 its reverse (646841133), we get a palindrome (977989779).

The spelling of 331148646 in words is "three hundred thirty-one million, one hundred forty-eight thousand, six hundred forty-six".