988887531 has 16 divisors (see below), whose sum is σ = 1341699840. Its totient is φ = 647692320.

The previous prime is 988887517. The next prime is 988887533. The reversal of 988887531 is 135788889.

It is not a de Polignac number, because 988887531 - 2⁵ = 988887499 is a prime.

It is a super-2 number, since 2×988887531² = 1955797097934551922, which contains 22 as substring.

It is a nialpdrome in base 10.

It is not an unprimeable number, because it can be changed into a prime (988887533) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 183826 + ... + 189128.

It is an arithmetic number, because the mean of its divisors is an integer number (83856240).

Almost surely, 2^988887531 is an apocalyptic number.

988887531 is a deficient number, since it is larger than the sum of its proper divisors (352812309).

988887531 is a wasteful number, since it uses less digits than its factorization.

988887531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6386.

The product of its digits is 3870720, while the sum is 57.

The square root of 988887531 is about 31446.5821831244. The cubic root of 988887531 is about 996.2820375533.

The spelling of 988887531 in words is "nine hundred eighty-eight million, eight hundred eighty-seven thousand, five hundred thirty-one".