345321061 has 4 divisors (see below), whose sum is σ = 350982124. Its totient is φ = 339660000.

The previous prime is 345321049. The next prime is 345321071. The reversal of 345321061 is 160123543.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 185804161 + 159516900 = 13631^2 + 12630^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-345321061 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (345321071) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2830440 + ... + 2830561.

It is an arithmetic number, because the mean of its divisors is an integer number (87745531).

Almost surely, 2^345321061 is an apocalyptic number.

It is an amenable number.

345321061 is a deficient number, since it is larger than the sum of its proper divisors (5661063).

345321061 is an equidigital number, since it uses as much as digits as its factorization.

345321061 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5661062.

The product of its (nonzero) digits is 2160, while the sum is 25.

The square root of 345321061 is about 18582.8162827920. The cubic root of 345321061 is about 701.5754048294.

The spelling of 345321061 in words is "three hundred forty-five million, three hundred twenty-one thousand, sixty-one".