343412581 has 2 divisors, whose sum is σ = 343412582. Its totient is φ = 343412580.

The previous prime is 343412549. The next prime is 343412591. The reversal of 343412581 is 185214343.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 197824225 + 145588356 = 14065^2 + 12066^2 .

It is a cyclic number.

It is not a de Polignac number, because 343412581 - 2⁵ = 343412549 is a prime.

It is a super-2 number, since 2×343412581² = 235864401578163122, which contains 22 as substring.

It is an alternating number because its digits alternate between odd and even.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (343412501) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 171706290 + 171706291.

It is an arithmetic number, because the mean of its divisors is an integer number (171706291).

Almost surely, 2^343412581 is an apocalyptic number.

It is an amenable number.

343412581 is a deficient number, since it is larger than the sum of its proper divisors (1).

343412581 is an equidigital number, since it uses as much as digits as its factorization.

343412581 is an evil number, because the sum of its binary digits is even.

The product of its digits is 11520, while the sum is 31.

The square root of 343412581 is about 18531.3944699259. The cubic root of 343412581 is about 700.2805548876.

The spelling of 343412581 in words is "three hundred forty-three million, four hundred twelve thousand, five hundred eighty-one".