331681542724 has 81 divisors (see below), whose sum is σ = 698218559199. Its totient is φ = 137460108240.

The previous prime is 331681542701. The next prime is 331681542761. The reversal of 331681542724 is 427245186133.

The square root of 331681542724 is 575918.

It is a perfect power (a square), and thus also a powerful number.

It is a super-2 number, since 2×331681542724² (a number of 24 digits) contains 22 as substring.

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 26 ways as a sum of consecutive naturals, for example, 249947749 + ... + 249949075.

Almost surely, 2^331681542724 is an apocalyptic number.

331681542724 is the 575918-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 331681542724

331681542724 is an abundant number, since it is smaller than the sum of its proper divisors (366537016475).

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

331681542724 is an equidigital number, since it uses as much as digits as its factorization.

331681542724 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2734 (or 1367 counting only the distinct ones).

The product of its digits is 967680, while the sum is 46.

The spelling of 331681542724 in words is "three hundred thirty-one billion, six hundred eighty-one million, five hundred forty-two thousand, seven hundred twenty-four".