344542403 has 2 divisors, whose sum is σ = 344542404. Its totient is φ = 344542402.

The previous prime is 344542399. The next prime is 344542421. The reversal of 344542403 is 304245443.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 344542403 - 2² = 344542399 is a prime.

It is not a weakly prime, because it can be changed into another prime (344542433) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 172271201 + 172271202.

It is an arithmetic number, because the mean of its divisors is an integer number (172271202).

Almost surely, 2^344542403 is an apocalyptic number.

344542403 is a deficient number, since it is larger than the sum of its proper divisors (1).

344542403 is an equidigital number, since it uses as much as digits as its factorization.

344542403 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 23040, while the sum is 29.

The square root of 344542403 is about 18561.8534365510. The cubic root of 344542403 is about 701.0476848968.

Adding to 344542403 its product of nonzero digits (23040), we get a palindrome (344565443).

Adding to 344542403 its reverse (304245443), we get a palindrome (648787846).

The spelling of 344542403 in words is "three hundred forty-four million, five hundred forty-two thousand, four hundred three".