987683231 has 4 divisors (see below), whose sum is σ = 987746232. Its totient is φ = 987620232.

The previous prime is 987683173. The next prime is 987683233. The reversal of 987683231 is 132386789.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 987683231 - 2¹⁴ = 987666847 is a prime.

It is a super-2 number, since 2×987683231² = 1951036329597198722, which contains 22 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 (987683233) 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, 12545 + ... + 46181.

It is an arithmetic number, because the mean of its divisors is an integer number (246936558).

Almost surely, 2^987683231 is an apocalyptic number.

987683231 is a deficient number, since it is larger than the sum of its proper divisors (63001).

987683231 is a wasteful number, since it uses less digits than its factorization.

987683231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63000.

The product of its digits is 435456, while the sum is 47.

The square root of 987683231 is about 31427.4280048495. The cubic root of 987683231 is about 995.8774381723.

The spelling of 987683231 in words is "nine hundred eighty-seven million, six hundred eighty-three thousand, two hundred thirty-one".