345949534321 has 2 divisors, whose sum is σ = 345949534322. Its totient is φ = 345949534320.

The previous prime is 345949534261. The next prime is 345949534331. The reversal of 345949534321 is 123435949543.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 339992781921 + 5956752400 = 583089^2 + 77180^2 .

It is an emirp because it is prime and its reverse (123435949543) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 345949534321 - 2²⁷ = 345815316593 is a prime.

It is not a weakly prime, because it can be changed into another prime (345949534331) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 172974767160 + 172974767161.

It is an arithmetic number, because the mean of its divisors is an integer number (172974767161).

Almost surely, 2^345949534321 is an apocalyptic number.

It is an amenable number.

345949534321 is a deficient number, since it is larger than the sum of its proper divisors (1).

345949534321 is an equidigital number, since it uses as much as digits as its factorization.

345949534321 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6998400, while the sum is 52.

The spelling of 345949534321 in words is "three hundred forty-five billion, nine hundred forty-nine million, five hundred thirty-four thousand, three hundred twenty-one".