10731987 has 16 divisors (see below), whose sum is σ = 18170880. Its totient is φ = 6132456.

The previous prime is 10731977. The next prime is 10731991. The reversal of 10731987 is 78913701.

10731987 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 10731987 - 2¹⁵ = 10699219 is a prime.

It is not an unprimeable number, because it can be changed into a prime (10731907) 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, 28203 + ... + 28580.

It is an arithmetic number, because the mean of its divisors is an integer number (1135680).

Almost surely, 2^10731987 is an apocalyptic number.

10731987 is a deficient number, since it is larger than the sum of its proper divisors (7438893).

10731987 is an equidigital number, since it uses as much as digits as its factorization.

10731987 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56799 (or 56793 counting only the distinct ones).

The product of its (nonzero) digits is 10584, while the sum is 36.

The square root of 10731987 is about 3275.9711537192. The cubic root of 10731987 is about 220.5769087078.

The spelling of 10731987 in words is "ten million, seven hundred thirty-one thousand, nine hundred eighty-seven".