344145331 has 4 divisors (see below), whose sum is σ = 364389192. Its totient is φ = 323901472.

The previous prime is 344145317. The next prime is 344145341. The reversal of 344145331 is 133541443.

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

It is a cyclic number.

It is not a de Polignac number, because 344145331 - 2⁷ = 344145203 is a prime.

It is a super-2 number, since 2×344145331² = 236872017698199122, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 344145331.

It is not an unprimeable number, because it can be changed into a prime (344145301) 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, 10121905 + ... + 10121938.

It is an arithmetic number, because the mean of its divisors is an integer number (91097298).

Almost surely, 2^344145331 is an apocalyptic number.

344145331 is a deficient number, since it is larger than the sum of its proper divisors (20243861).

344145331 is a wasteful number, since it uses less digits than its factorization.

344145331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20243860.

The product of its digits is 8640, while the sum is 28.

The square root of 344145331 is about 18551.1544384709. The cubic root of 344145331 is about 700.7782711198.

Adding to 344145331 its reverse (133541443), we get a palindrome (477686774).

The spelling of 344145331 in words is "three hundred forty-four million, one hundred forty-five thousand, three hundred thirty-one".