343407481 has 2 divisors, whose sum is σ = 343407482. Its totient is φ = 343407480.

The previous prime is 343407469. The next prime is 343407523. The reversal of 343407481 is 184704343.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 215355625 + 128051856 = 14675^2 + 11316^2 .

It is an emirp because it is prime and its reverse (184704343) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 343407481 - 2¹³ = 343399289 is a prime.

It is a super-2 number, since 2×343407481² = 235857396013530722, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (343407401) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 171703740 + 171703741.

It is an arithmetic number, because the mean of its divisors is an integer number (171703741).

Almost surely, 2^343407481 is an apocalyptic number.

It is an amenable number.

343407481 is a deficient number, since it is larger than the sum of its proper divisors (1).

343407481 is an equidigital number, since it uses as much as digits as its factorization.

343407481 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 32256, while the sum is 34.

The square root of 343407481 is about 18531.2568650915. The cubic root of 343407481 is about 700.2770882620.

The spelling of 343407481 in words is "three hundred forty-three million, four hundred seven thousand, four hundred eighty-one".