87838131 has 8 divisors (see below), whose sum is σ = 117960640. Its totient is φ = 58137192.

The previous prime is 87838117. The next prime is 87838141. The reversal of 87838131 is 13183878.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 87838131 - 2⁹ = 87837619 is a prime.

It is a super-2 number, since 2×87838131² = 15431074515146322, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 87838131.

It is not an unprimeable number, because it can be changed into a prime (87838141) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 104905 + ... + 105738.

It is an arithmetic number, because the mean of its divisors is an integer number (14745080).

Almost surely, 2^87838131 is an apocalyptic number.

87838131 is a deficient number, since it is larger than the sum of its proper divisors (30122509).

87838131 is a wasteful number, since it uses less digits than its factorization.

87838131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 210785.

The product of its digits is 32256, while the sum is 39.

The square root of 87838131 is about 9372.1999018373. The cubic root of 87838131 is about 444.5231284278.

The spelling of 87838131 in words is "eighty-seven million, eight hundred thirty-eight thousand, one hundred thirty-one".