343803953 has 2 divisors, whose sum is σ = 343803954. Its totient is φ = 343803952.

The previous prime is 343803949. The next prime is 343803973. The reversal of 343803953 is 359308343.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 225690529 + 118113424 = 15023^2 + 10868^2 .

It is an emirp because it is prime and its reverse (359308343) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 343803953 - 2² = 343803949 is a prime.

It is not a weakly prime, because it can be changed into another prime (343803923) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 171901976 + 171901977.

It is an arithmetic number, because the mean of its divisors is an integer number (171901977).

Almost surely, 2^343803953 is an apocalyptic number.

It is an amenable number.

343803953 is a deficient number, since it is larger than the sum of its proper divisors (1).

343803953 is an equidigital number, since it uses as much as digits as its factorization.

343803953 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 116640, while the sum is 38.

The square root of 343803953 is about 18541.9511648586. The cubic root of 343803953 is about 700.5464800625.

The spelling of 343803953 in words is "three hundred forty-three million, eight hundred three thousand, nine hundred fifty-three".