340145330321 has 4 divisors (see below), whose sum is σ = 340147858752. Its totient is φ = 340142801892.

The previous prime is 340145330303. The next prime is 340145330363. The reversal of 340145330321 is 123033541043.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 340145330321 - 2¹⁰ = 340145329297 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (340145330381) 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, 1050365 + ... + 1335498.

It is an arithmetic number, because the mean of its divisors is an integer number (85036964688).

Almost surely, 2^340145330321 is an apocalyptic number.

It is an amenable number.

340145330321 is a deficient number, since it is larger than the sum of its proper divisors (2528431).

340145330321 is a wasteful number, since it uses less digits than its factorization.

340145330321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2528430.

The product of its (nonzero) digits is 12960, while the sum is 29.

Adding to 340145330321 its reverse (123033541043), we get a palindrome (463178871364).

The spelling of 340145330321 in words is "three hundred forty billion, one hundred forty-five million, three hundred thirty thousand, three hundred twenty-one".