87383131 has 4 divisors (see below), whose sum is σ = 95327064. Its totient is φ = 79439200.

The previous prime is 87383123. The next prime is 87383143. The reversal of 87383131 is 13138378.

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

It is a cyclic number.

It is not a de Polignac number, because 87383131 - 2³ = 87383123 is a prime.

It is a super-2 number, since 2×87383131² = 15271623166726322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (87383161) 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, 3971950 + ... + 3971971.

It is an arithmetic number, because the mean of its divisors is an integer number (23831766).

Almost surely, 2^87383131 is an apocalyptic number.

87383131 is a deficient number, since it is larger than the sum of its proper divisors (7943933).

87383131 is a wasteful number, since it uses less digits than its factorization.

87383131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7943932.

The product of its digits is 12096, while the sum is 34.

The square root of 87383131 is about 9347.8944688095. The cubic root of 87383131 is about 443.7542586115.

The spelling of 87383131 in words is "eighty-seven million, three hundred eighty-three thousand, one hundred thirty-one".