1983231 has 8 divisors (see below), whose sum is σ = 2938160. Its totient is φ = 1322136.

The previous prime is 1983229. The next prime is 1983253. The reversal of 1983231 is 1323891.

It is not a de Polignac number, because 1983231 - 2¹ = 1983229 is a prime.

It is a super-2 number, since 2×1983231² = 7866410398722, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 73453 = 1983231 / (1 + 9 + 8 + 3 + 2 + 3 + 1).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1983195 and 1983204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1983731) 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, 36700 + ... + 36753.

It is an arithmetic number, because the mean of its divisors is an integer number (367270).

2^1983231 is an apocalyptic number.

1983231 is a deficient number, since it is larger than the sum of its proper divisors (954929).

1983231 is an equidigital number, since it uses as much as digits as its factorization.

1983231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73462 (or 73456 counting only the distinct ones).

The product of its digits is 1296, while the sum is 27.

The square root of 1983231 is about 1408.2723458195. The cubic root of 1983231 is about 125.6389893087.

The spelling of 1983231 in words is "one million, nine hundred eighty-three thousand, two hundred thirty-one".