1840331 has 2 divisors, whose sum is σ = 1840332. Its totient is φ = 1840330.

The previous prime is 1840327. The next prime is 1840337. The reversal of 1840331 is 1330481.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1840331 - 2² = 1840327 is a prime.

It is a super-2 number, since 2×1840331² = 6773636379122, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1840337) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 920165 + 920166.

It is an arithmetic number, because the mean of its divisors is an integer number (920166).

2^1840331 is an apocalyptic number.

1840331 is a deficient number, since it is larger than the sum of its proper divisors (1).

1840331 is an equidigital number, since it uses as much as digits as its factorization.

1840331 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 288, while the sum is 20.

The square root of 1840331 is about 1356.5879993572. The cubic root of 1840331 is about 122.5458609350.

The spelling of 1840331 in words is "one million, eight hundred forty thousand, three hundred thirty-one".