340423441 has 2 divisors, whose sum is σ = 340423442. Its totient is φ = 340423440.

The previous prime is 340423439. The next prime is 340423471. The reversal of 340423441 is 144324043.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 316128400 + 24295041 = 17780^2 + 4929^2 .

It is a cyclic number.

It is not a de Polignac number, because 340423441 - 2¹ = 340423439 is a prime.

Together with 340423439, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (340423471) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 170211720 + 170211721.

It is an arithmetic number, because the mean of its divisors is an integer number (170211721).

Almost surely, 2^340423441 is an apocalyptic number.

It is an amenable number.

340423441 is a deficient number, since it is larger than the sum of its proper divisors (1).

340423441 is an equidigital number, since it uses as much as digits as its factorization.

340423441 is an evil number, because the sum of its binary digits is even.

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

The square root of 340423441 is about 18450.5674980473. The cubic root of 340423441 is about 698.2428315507.

Adding to 340423441 its reverse (144324043), we get a palindrome (484747484).

The spelling of 340423441 in words is "three hundred forty million, four hundred twenty-three thousand, four hundred forty-one".