87031903 has 8 divisors (see below), whose sum is σ = 101151360. Its totient is φ = 73334040.

The previous prime is 87031873. The next prime is 87031909. The reversal of 87031903 is 30913078.

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

It is a cyclic number.

It is not a de Polignac number, because 87031903 - 2¹³ = 87023711 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87031909) 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, 104953 + ... + 105778.

It is an arithmetic number, because the mean of its divisors is an integer number (12643920).

Almost surely, 2^87031903 is an apocalyptic number.

87031903 is a deficient number, since it is larger than the sum of its proper divisors (14119457).

87031903 is a wasteful number, since it uses less digits than its factorization.

87031903 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 210797.

The product of its (nonzero) digits is 4536, while the sum is 31.

The square root of 87031903 is about 9329.0890766462. The cubic root of 87031903 is about 443.1589178921.

The spelling of 87031903 in words is "eighty-seven million, thirty-one thousand, nine hundred three".