345821141 has 4 divisors (see below), whose sum is σ = 345924300. Its totient is φ = 345717984.

The previous prime is 345821117. The next prime is 345821153. The reversal of 345821141 is 141128543.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 141128543 = 17 ⋅8301679.

It can be written as a sum of positive squares in 2 ways, for example, as 54982225 + 290838916 = 7415^2 + 17054^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-345821141 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 (345841141) 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 in 3 ways as a sum of consecutive naturals, for example, 46376 + ... + 53313.

It is an arithmetic number, because the mean of its divisors is an integer number (86481075).

Almost surely, 2^345821141 is an apocalyptic number.

It is an amenable number.

345821141 is a deficient number, since it is larger than the sum of its proper divisors (103159).

345821141 is an equidigital number, since it uses as much as digits as its factorization.

345821141 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 103158.

The product of its digits is 3840, while the sum is 29.

The square root of 345821141 is about 18596.2668565495. The cubic root of 345821141 is about 701.9139058602.

Adding to 345821141 its reverse (141128543), we get a palindrome (486949684).

The spelling of 345821141 in words is "three hundred forty-five million, eight hundred twenty-one thousand, one hundred forty-one".