343149997 has 2 divisors, whose sum is σ = 343149998. Its totient is φ = 343149996.

The previous prime is 343149977. The next prime is 343150001. The reversal of 343149997 is 799941343.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 308740041 + 34409956 = 17571^2 + 5866^2 .

It is a cyclic number.

It is not a de Polignac number, because 343149997 - 2¹⁹ = 342625709 is a prime.

It is a super-2 number, since 2×343149997² = 235503840882200018, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 343149997.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (343149907) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 171574998 + 171574999.

It is an arithmetic number, because the mean of its divisors is an integer number (171574999).

Almost surely, 2^343149997 is an apocalyptic number.

It is an amenable number.

343149997 is a deficient number, since it is larger than the sum of its proper divisors (1).

343149997 is an equidigital number, since it uses as much as digits as its factorization.

343149997 is an evil number, because the sum of its binary digits is even.

The product of its digits is 734832, while the sum is 49.

The square root of 343149997 is about 18524.3082731853. The cubic root of 343149997 is about 700.1020239050.

The spelling of 343149997 in words is "three hundred forty-three million, one hundred forty-nine thousand, nine hundred ninety-seven".