11980281 has 4 divisors (see below), whose sum is σ = 15973712. Its totient is φ = 7986852.

The previous prime is 11980261. The next prime is 11980301. The reversal of 11980281 is 18208911.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is an interprime number because it is at equal distance from previous prime (11980261) and next prime (11980301).

It is not a de Polignac number, because 11980281 - 2⁷ = 11980153 is a prime.

It is a super-2 number, since 2×11980281² = 287054265677922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11980231) 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, 1996711 + ... + 1996716.

It is an arithmetic number, because the mean of its divisors is an integer number (3993428).

Almost surely, 2^11980281 is an apocalyptic number.

It is an amenable number.

11980281 is a deficient number, since it is larger than the sum of its proper divisors (3993431).

11980281 is an equidigital number, since it uses as much as digits as its factorization.

11980281 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3993430.

The product of its (nonzero) digits is 1152, while the sum is 30.

The square root of 11980281 is about 3461.2542524351. The cubic root of 11980281 is about 228.8173763129.

The spelling of 11980281 in words is "eleven million, nine hundred eighty thousand, two hundred eighty-one".