343292561 has 2 divisors, whose sum is σ = 343292562. Its totient is φ = 343292560.

The previous prime is 343292489. The next prime is 343292591. The reversal of 343292561 is 165292343.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 227859025 + 115433536 = 15095^2 + 10744^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-343292561 is a prime.

It is a Chen prime.

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

It is not a weakly prime, because it can be changed into another prime (343292591) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 171646280 + 171646281.

It is an arithmetic number, because the mean of its divisors is an integer number (171646281).

Almost surely, 2^343292561 is an apocalyptic number.

It is an amenable number.

343292561 is a deficient number, since it is larger than the sum of its proper divisors (1).

343292561 is an equidigital number, since it uses as much as digits as its factorization.

343292561 is an evil number, because the sum of its binary digits is even.

The product of its digits is 38880, while the sum is 35.

The square root of 343292561 is about 18528.1558985237. The cubic root of 343292561 is about 700.1989645304.

The spelling of 343292561 in words is "three hundred forty-three million, two hundred ninety-two thousand, five hundred sixty-one".