987117023 has 8 divisors (see below), whose sum is σ = 1017603600. Its totient is φ = 957089088.

The previous prime is 987117011. The next prime is 987117031. The reversal of 987117023 is 320711789.

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 987117023 - 2⁶ = 987116959 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 (987117623) 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, 110288 + ... + 118901.

It is an arithmetic number, because the mean of its divisors is an integer number (127200450).

Almost surely, 2^987117023 is an apocalyptic number.

987117023 is a deficient number, since it is larger than the sum of its proper divisors (30486577).

987117023 is a wasteful number, since it uses less digits than its factorization.

987117023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 229321.

The product of its (nonzero) digits is 21168, while the sum is 38.

The square root of 987117023 is about 31418.4185311737. The cubic root of 987117023 is about 995.6870999682.

The spelling of 987117023 in words is "nine hundred eighty-seven million, one hundred seventeen thousand, twenty-three".