340031323 has 4 divisors (see below), whose sum is σ = 347266080. Its totient is φ = 332796568.

The previous prime is 340031311. The next prime is 340031357. The reversal of 340031323 is 323130043.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-340031323 is a prime.

It is a super-2 number, since 2×340031323² = 231242601242260658, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 340031323.

It is not an unprimeable number, because it can be changed into a prime (340031423) 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, 3617308 + ... + 3617401.

It is an arithmetic number, because the mean of its divisors is an integer number (86816520).

Almost surely, 2^340031323 is an apocalyptic number.

340031323 is a deficient number, since it is larger than the sum of its proper divisors (7234757).

340031323 is an equidigital number, since it uses as much as digits as its factorization.

340031323 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7234756.

The product of its (nonzero) digits is 648, while the sum is 19.

The square root of 340031323 is about 18439.9382591157. The cubic root of 340031323 is about 697.9746373545.

Adding to 340031323 its reverse (323130043), we get a palindrome (663161366).

It can be divided in two parts, 3400313 and 23, that added together give a square (3400336 = 1844²).

The spelling of 340031323 in words is "three hundred forty million, thirty-one thousand, three hundred twenty-three".