344402143 has 4 divisors (see below), whose sum is σ = 348271920. Its totient is φ = 340532368.

The previous prime is 344402141. The next prime is 344402153. The reversal of 344402143 is 341204443.

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 344402143 - 2¹ = 344402141 is a prime.

It is a super-2 number, since 2×344402143² = 237225672205984898, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (344402141) 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, 1934755 + ... + 1934932.

It is an arithmetic number, because the mean of its divisors is an integer number (87067980).

Almost surely, 2^344402143 is an apocalyptic number.

344402143 is a deficient number, since it is larger than the sum of its proper divisors (3869777).

344402143 is an equidigital number, since it uses as much as digits as its factorization.

344402143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3869776.

The product of its (nonzero) digits is 4608, while the sum is 25.

The square root of 344402143 is about 18558.0748732189. The cubic root of 344402143 is about 700.9525419929.

Adding to 344402143 its reverse (341204443), we get a palindrome (685606586).

The spelling of 344402143 in words is "three hundred forty-four million, four hundred two thousand, one hundred forty-three".