345321049 has 2 divisors, whose sum is σ = 345321050. Its totient is φ = 345321048.

The previous prime is 345321013. The next prime is 345321071. The reversal of 345321049 is 940123543.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 261048649 + 84272400 = 16157^2 + 9180^2 .

It is an emirp because it is prime and its reverse (940123543) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 345321049 - 2¹¹ = 345319001 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 345321049.

It is not a weakly prime, because it can be changed into another prime (345321349) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 172660524 + 172660525.

It is an arithmetic number, because the mean of its divisors is an integer number (172660525).

Almost surely, 2^345321049 is an apocalyptic number.

It is an amenable number.

345321049 is a deficient number, since it is larger than the sum of its proper divisors (1).

345321049 is an equidigital number, since it uses as much as digits as its factorization.

345321049 is an evil number, because the sum of its binary digits is even.

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

The square root of 345321049 is about 18582.8159599131. The cubic root of 345321049 is about 701.5753967028.

The spelling of 345321049 in words is "three hundred forty-five million, three hundred twenty-one thousand, forty-nine".