2981315987 has 12 divisors (see below), whose sum is σ = 3231457920. Its totient is φ = 2749282848.

The previous prime is 2981315957. The next prime is 2981316001. The reversal of 2981315987 is 7895131892.

It is a happy number.

2981315987 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 2981315987 - 2²² = 2977121683 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2981315957) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 175589 + ... + 191817.

It is an arithmetic number, because the mean of its divisors is an integer number (269288160).

Almost surely, 2^2981315987 is an apocalyptic number.

2981315987 is a deficient number, since it is larger than the sum of its proper divisors (250141933).

2981315987 is a wasteful number, since it uses less digits than its factorization.

2981315987 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17342 (or 17329 counting only the distinct ones).

The product of its digits is 1088640, while the sum is 53.

The square root of 2981315987 is about 54601.4284336958. The cubic root of 2981315987 is about 1439.2492207386.

The spelling of 2981315987 in words is "two billion, nine hundred eighty-one million, three hundred fifteen thousand, nine hundred eighty-seven".