10981143 has 16 divisors (see below), whose sum is σ = 16976640. Its totient is φ = 7002072.

The previous prime is 10981141. The next prime is 10981207. The reversal of 10981143 is 34118901.

It is not a de Polignac number, because 10981143 - 2¹ = 10981141 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10981141) 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, 8221 + ... + 9462.

It is an arithmetic number, because the mean of its divisors is an integer number (1061040).

Almost surely, 2^10981143 is an apocalyptic number.

10981143 is a deficient number, since it is larger than the sum of its proper divisors (5995497).

10981143 is a wasteful number, since it uses less digits than its factorization.

10981143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17715 (or 17709 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 27.

The square root of 10981143 is about 3313.7807712641. The cubic root of 10981143 is about 222.2708527552.

The spelling of 10981143 in words is "ten million, nine hundred eighty-one thousand, one hundred forty-three".