340444331 has 2 divisors, whose sum is σ = 340444332. Its totient is φ = 340444330.

The previous prime is 340444319. The next prime is 340444339. The reversal of 340444331 is 133444043.

It is a strong prime.

It is an emirp because it is prime and its reverse (133444043) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 340444331 - 2¹⁸ = 340182187 is a prime.

It is a super-2 number, since 2×340444331² = 231804685020075122, which contains 22 as substring.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 340444331.

It is not a weakly prime, because it can be changed into another prime (340444339) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 170222165 + 170222166.

It is an arithmetic number, because the mean of its divisors is an integer number (170222166).

Almost surely, 2^340444331 is an apocalyptic number.

340444331 is a deficient number, since it is larger than the sum of its proper divisors (1).

340444331 is an equidigital number, since it uses as much as digits as its factorization.

340444331 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6912, while the sum is 26.

The square root of 340444331 is about 18451.1335966113. The cubic root of 340444331 is about 698.2571137579.

Adding to 340444331 its reverse (133444043), we get a palindrome (473888374).

The spelling of 340444331 in words is "three hundred forty million, four hundred forty-four thousand, three hundred thirty-one".