11730981 has 8 divisors (see below), whose sum is σ = 15669280. Its totient is φ = 7806672.

The previous prime is 11730973. The next prime is 11730997. The reversal of 11730981 is 18903711.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 11730981 - 2³ = 11730973 is a prime.

It is a super-2 number, since 2×11730981² = 275231830444722, 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 (11730931) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1351 + ... + 5028.

It is an arithmetic number, because the mean of its divisors is an integer number (1958660).

Almost surely, 2^11730981 is an apocalyptic number.

It is an amenable number.

11730981 is a deficient number, since it is larger than the sum of its proper divisors (3938299).

11730981 is an equidigital number, since it uses as much as digits as its factorization.

11730981 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6995.

The product of its (nonzero) digits is 1512, while the sum is 30.

The square root of 11730981 is about 3425.0519704086. The cubic root of 11730981 is about 227.2190695679.

The spelling of 11730981 in words is "eleven million, seven hundred thirty thousand, nine hundred eighty-one".