10903531987 has 4 divisors (see below), whose sum is σ = 10903974696. Its totient is φ = 10903089280.

The previous prime is 10903531963. The next prime is 10903531997. The reversal of 10903531987 is 78913530901.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-10903531987 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (10903531907) 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, 182089 + ... + 234442.

It is an arithmetic number, because the mean of its divisors is an integer number (2725993674).

Almost surely, 2^10903531987 is an apocalyptic number.

10903531987 is a deficient number, since it is larger than the sum of its proper divisors (442709).

10903531987 is an equidigital number, since it uses as much as digits as its factorization.

10903531987 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 442708.

The product of its (nonzero) digits is 204120, while the sum is 46.

The spelling of 10903531987 in words is "ten billion, nine hundred three million, five hundred thirty-one thousand, nine hundred eighty-seven".