330140981 has 4 divisors (see below), whose sum is σ = 330178764. Its totient is φ = 330103200.

The previous prime is 330140953. The next prime is 330141029. The reversal of 330140981 is 189041033.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 229037956 + 101103025 = 15134^2 + 10055^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-330140981 is a prime.

It is a super-2 number, since 2×330140981² = 217986134671284722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (330140911) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1691 + ... + 25751.

It is an arithmetic number, because the mean of its divisors is an integer number (82544691).

Almost surely, 2^330140981 is an apocalyptic number.

It is an amenable number.

330140981 is a deficient number, since it is larger than the sum of its proper divisors (37783).

330140981 is a wasteful number, since it uses less digits than its factorization.

330140981 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37782.

The product of its (nonzero) digits is 2592, while the sum is 29.

The square root of 330140981 is about 18169.7820845491. The cubic root of 330140981 is about 691.1407169076.

The spelling of 330140981 in words is "three hundred thirty million, one hundred forty thousand, nine hundred eighty-one".