240330981 has 16 divisors (see below), whose sum is σ = 367971840. Its totient is φ = 137988720.

The previous prime is 240330977. The next prime is 240331001. The reversal of 240330981 is 189033042.

240330981 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 240330981 - 2² = 240330977 is a prime.

It is a super-2 number, since 2×240330981² = 115517960856844722, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (240330901) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 191025 + ... + 192278.

It is an arithmetic number, because the mean of its divisors is an integer number (22998240).

Almost surely, 2^240330981 is an apocalyptic number.

It is an amenable number.

240330981 is a deficient number, since it is larger than the sum of its proper divisors (127640859).

240330981 is a wasteful number, since it uses less digits than its factorization.

240330981 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 383336.

The product of its (nonzero) digits is 5184, while the sum is 30.

The square root of 240330981 is about 15502.6120702287. The cubic root of 240330981 is about 621.7320463343.

The spelling of 240330981 in words is "two hundred forty million, three hundred thirty thousand, nine hundred eighty-one".