988231 has 2 divisors, whose sum is σ = 988232. Its totient is φ = 988230.

The previous prime is 988219. The next prime is 988237. The reversal of 988231 is 132889.

988231 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 988231 - 2⁵ = 988199 is a prime.

It is a super-2 number, since 2×988231² = 1953201018722, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 988193 and 988202.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (988237) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 494115 + 494116.

It is an arithmetic number, because the mean of its divisors is an integer number (494116).

2⁹⁸⁸²³¹ is an apocalyptic number.

988231 is a deficient number, since it is larger than the sum of its proper divisors (1).

988231 is an equidigital number, since it uses as much as digits as its factorization.

988231 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3456, while the sum is 31.

The square root of 988231 is about 994.0980836919. The cubic root of 988231 is about 99.6061508650.

The spelling of 988231 in words is "nine hundred eighty-eight thousand, two hundred thirty-one".