10321987 has 4 divisors (see below), whose sum is σ = 11116000. Its totient is φ = 9527976.

The previous prime is 10321979. The next prime is 10322003. The reversal of 10321987 is 78912301.

10321987 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 10321987 - 2³ = 10321979 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (10321937) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 396987 + ... + 397012.

It is an arithmetic number, because the mean of its divisors is an integer number (2779000).

Almost surely, 2^10321987 is an apocalyptic number.

10321987 is a deficient number, since it is larger than the sum of its proper divisors (794013).

10321987 is an equidigital number, since it uses as much as digits as its factorization.

10321987 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 794012.

The product of its (nonzero) digits is 3024, while the sum is 31.

The square root of 10321987 is about 3212.7849289985. The cubic root of 10321987 is about 217.7314188096.

The spelling of 10321987 in words is "ten million, three hundred twenty-one thousand, nine hundred eighty-seven".