11040981 has 16 divisors (see below), whose sum is σ = 17217024. Its totient is φ = 6161904.

The previous prime is 11040959. The next prime is 11040983. The reversal of 11040981 is 18904011.

11040981 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 11040981 - 2⁶ = 11040917 is a prime.

It is a super-2 number, since 2×11040981² = 243806522884722, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11040983) 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, 5211 + ... + 7016.

It is an arithmetic number, because the mean of its divisors is an integer number (1076064).

Almost surely, 2^11040981 is an apocalyptic number.

It is an amenable number.

11040981 is a deficient number, since it is larger than the sum of its proper divisors (6176043).

11040981 is a wasteful number, since it uses less digits than its factorization.

11040981 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12280.

The product of its (nonzero) digits is 288, while the sum is 24.

The square root of 11040981 is about 3322.7971650403. The cubic root of 11040981 is about 222.6738514162.

Adding to 11040981 its reverse (18904011), we get a palindrome (29944992).

It can be divided in two parts, 11040 and 981, that added together give a palindrome (12021).

The spelling of 11040981 in words is "eleven million, forty thousand, nine hundred eighty-one".