87031839037 has 24 divisors (see below), whose sum is σ = 103108987352. Its totient is φ = 72971902080.

The previous prime is 87031839019. The next prime is 87031839047. The reversal of 87031839037 is 73093813078.

It can be written as a sum of positive squares in 4 ways, for example, as 13414040761 + 73617798276 = 115819^2 + 271326^2 .

It is a de Polignac number, because none of the positive numbers 2^k-87031839037 is a prime.

It is a super-5 number, since 5×87031839037⁵ (a number of 56 digits) contains 55555 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87031839047) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1885243 + ... + 1930855.

Almost surely, 2^87031839037 is an apocalyptic number.

It is an amenable number.

87031839037 is a deficient number, since it is larger than the sum of its proper divisors (16077148315).

87031839037 is a wasteful number, since it uses less digits than its factorization.

87031839037 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46861 (or 46850 counting only the distinct ones).

The product of its (nonzero) digits is 762048, while the sum is 49.

The spelling of 87031839037 in words is "eighty-seven billion, thirty-one million, eight hundred thirty-nine thousand, thirty-seven".