340221133243 has 4 divisors (see below), whose sum is σ = 340223763640. Its totient is φ = 340218502848.

The previous prime is 340221133183. The next prime is 340221133253. The reversal of 340221133243 is 342331122043.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 342331122043 = 7591 ⋅45096973.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-340221133243 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (340221133253) 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, 1110573 + ... + 1383406.

It is an arithmetic number, because the mean of its divisors is an integer number (85055940910).

Almost surely, 2^340221133243 is an apocalyptic number.

340221133243 is a deficient number, since it is larger than the sum of its proper divisors (2630397).

340221133243 is a wasteful number, since it uses less digits than its factorization.

340221133243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2630396.

The product of its (nonzero) digits is 10368, while the sum is 28.

Adding to 340221133243 its reverse (342331122043), we get a palindrome (682552255286).

The spelling of 340221133243 in words is "three hundred forty billion, two hundred twenty-one million, one hundred thirty-three thousand, two hundred forty-three".