353142661 has 2 divisors, whose sum is σ = 353142662. Its totient is φ = 353142660.

The previous prime is 353142659. The next prime is 353142697. The reversal of 353142661 is 166241353.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 205033761 + 148108900 = 14319^2 + 12170^2 .

It is an emirp because it is prime and its reverse (166241353) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 353142661 - 2¹ = 353142659 is a prime.

Together with 353142659, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (353142611) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 176571330 + 176571331.

It is an arithmetic number, because the mean of its divisors is an integer number (176571331).

Almost surely, 2^353142661 is an apocalyptic number.

It is an amenable number.

353142661 is a deficient number, since it is larger than the sum of its proper divisors (1).

353142661 is an equidigital number, since it uses as much as digits as its factorization.

353142661 is an evil number, because the sum of its binary digits is even.

The product of its digits is 12960, while the sum is 31.

The square root of 353142661 is about 18792.0903839887. The cubic root of 353142661 is about 706.8328553554.

The spelling of 353142661 in words is "three hundred fifty-three million, one hundred forty-two thousand, six hundred sixty-one".