353443381 has 2 divisors, whose sum is σ = 353443382. Its totient is φ = 353443380.

The previous prime is 353443373. The next prime is 353443397. The reversal of 353443381 is 183344353.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 350962756 + 2480625 = 18734^2 + 1575^2 .

It is a cyclic number.

It is not a de Polignac number, because 353443381 - 2³ = 353443373 is a prime.

It is a super-2 number, since 2×353443381² = 249844447145422322, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (353446381) 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, 176721690 + 176721691.

It is an arithmetic number, because the mean of its divisors is an integer number (176721691).

Almost surely, 2^353443381 is an apocalyptic number.

It is an amenable number.

353443381 is a deficient number, since it is larger than the sum of its proper divisors (1).

353443381 is an equidigital number, since it uses as much as digits as its factorization.

353443381 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 51840, while the sum is 34.

The square root of 353443381 is about 18800.0899199977. The cubic root of 353443381 is about 707.0334338497.

The spelling of 353443381 in words is "three hundred fifty-three million, four hundred forty-three thousand, three hundred eighty-one".