11350981 has 4 divisors (see below), whose sum is σ = 11371500. Its totient is φ = 11330464.

The previous prime is 11350979. The next prime is 11350987. The reversal of 11350981 is 18905311.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1522756 + 9828225 = 1234^2 + 3135^2 .

It is a cyclic number.

It is not a de Polignac number, because 11350981 - 2¹ = 11350979 is a prime.

It is a super-2 number, since 2×11350981² = 257689539324722, 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 (11350987) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9406 + ... + 10543.

It is an arithmetic number, because the mean of its divisors is an integer number (2842875).

Almost surely, 2^11350981 is an apocalyptic number.

It is an amenable number.

11350981 is a deficient number, since it is larger than the sum of its proper divisors (20519).

11350981 is an equidigital number, since it uses as much as digits as its factorization.

11350981 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20518.

The product of its (nonzero) digits is 1080, while the sum is 28.

The square root of 11350981 is about 3369.1216956352. The cubic root of 11350981 is about 224.7386661298.

The spelling of 11350981 in words is "eleven million, three hundred fifty thousand, nine hundred eighty-one".