10111312987 has 4 divisors (see below), whose sum is σ = 10115649360. Its totient is φ = 10106976616.

The previous prime is 10111312979. The next prime is 10111313021. The reversal of 10111312987 is 78921311101.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 78921311101 = 12743 ⋅6193307.

It is a cyclic number.

It is not a de Polignac number, because 10111312987 - 2³ = 10111312979 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (10111312907) 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, 2164687 + ... + 2169352.

It is an arithmetic number, because the mean of its divisors is an integer number (2528912340).

Almost surely, 2^10111312987 is an apocalyptic number.

10111312987 is a deficient number, since it is larger than the sum of its proper divisors (4336373).

10111312987 is an equidigital number, since it uses as much as digits as its factorization.

10111312987 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4336372.

The product of its (nonzero) digits is 3024, while the sum is 34.

The spelling of 10111312987 in words is "ten billion, one hundred eleven million, three hundred twelve thousand, nine hundred eighty-seven".