10989731 has 2 divisors, whose sum is σ = 10989732. Its totient is φ = 10989730.

The previous prime is 10989689. The next prime is 10989749. The reversal of 10989731 is 13798901.

10989731 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is an emirp because it is prime and its reverse (13798901) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-10989731 is a prime.

It is a super-2 number, since 2×10989731² = 241548374904722, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (10989131) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5494865 + 5494866.

It is an arithmetic number, because the mean of its divisors is an integer number (5494866).

Almost surely, 2^10989731 is an apocalyptic number.

10989731 is a deficient number, since it is larger than the sum of its proper divisors (1).

10989731 is an equidigital number, since it uses as much as digits as its factorization.

10989731 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 13608, while the sum is 38.

The square root of 10989731 is about 3315.0763188802. The cubic root of 10989731 is about 222.3287812932.

The spelling of 10989731 in words is "ten million, nine hundred eighty-nine thousand, seven hundred thirty-one".