1840231 has 2 divisors, whose sum is σ = 1840232. Its totient is φ = 1840230.

The previous prime is 1840219. The next prime is 1840259. The reversal of 1840231 is 1320481.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1840231 - 2¹⁹ = 1315943 is a prime.

It is a super-2 number, since 2×1840231² = 6772900266722, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1840199 and 1840208.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1840261) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 920115 + 920116.

It is an arithmetic number, because the mean of its divisors is an integer number (920116).

2^1840231 is an apocalyptic number.

1840231 is a deficient number, since it is larger than the sum of its proper divisors (1).

1840231 is an equidigital number, since it uses as much as digits as its factorization.

1840231 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 192, while the sum is 19.

The square root of 1840231 is about 1356.5511416825. The cubic root of 1840231 is about 122.5436412604.

The spelling of 1840231 in words is "one million, eight hundred forty thousand, two hundred thirty-one".