1982231 has 4 divisors (see below), whose sum is σ = 1990032. Its totient is φ = 1974432.

The previous prime is 1982219. The next prime is 1982263. The reversal of 1982231 is 1322891.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1982231 is a prime.

It is a super-2 number, since 2×1982231² = 7858479474722, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1982231.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1982291) 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, 3506 + ... + 4031.

It is an arithmetic number, because the mean of its divisors is an integer number (497508).

2^1982231 is an apocalyptic number.

1982231 is a deficient number, since it is larger than the sum of its proper divisors (7801).

1982231 is an equidigital number, since it uses as much as digits as its factorization.

1982231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7800.

The product of its digits is 864, while the sum is 26.

The square root of 1982231 is about 1407.9172560914. The cubic root of 1982231 is about 125.6178688724.

The spelling of 1982231 in words is "one million, nine hundred eighty-two thousand, two hundred thirty-one".