2340581 has 2 divisors, whose sum is σ = 2340582. Its totient is φ = 2340580.

The previous prime is 2340563. The next prime is 2340587. The reversal of 2340581 is 1850432.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1322500 + 1018081 = 1150^2 + 1009^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2340581 is a prime.

It is a super-2 number, since 2×2340581² = 10956638835122, which contains 22 as substring.

It is equal to p₁₇₂₂₄₇ and since 2340581 and 172247 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2340587) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1170290 + 1170291.

It is an arithmetic number, because the mean of its divisors is an integer number (1170291).

2^2340581 is an apocalyptic number.

It is an amenable number.

2340581 is a deficient number, since it is larger than the sum of its proper divisors (1).

2340581 is an equidigital number, since it uses as much as digits as its factorization.

2340581 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 960, while the sum is 23.

The square root of 2340581 is about 1529.8957480822. The cubic root of 2340581 is about 132.7724263227.

It can be divided in two parts, 23 and 40581, that added together give a palindrome (40604).

The spelling of 2340581 in words is "two million, three hundred forty thousand, five hundred eighty-one".