340451 has 2 divisors, whose sum is σ = 340452. Its totient is φ = 340450.

The previous prime is 340447. The next prime is 340453. The reversal of 340451 is 154043.

It is a strong prime.

It is an emirp because it is prime and its reverse (154043) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 340451 - 2² = 340447 is a prime.

Together with 340453, it forms a pair of twin primes.

It is a Chen prime.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 340451.

It is not a weakly prime, because it can be changed into another prime (340453) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 170225 + 170226.

It is an arithmetic number, because the mean of its divisors is an integer number (170226).

2³⁴⁰⁴⁵¹ is an apocalyptic number.

340451 is a deficient number, since it is larger than the sum of its proper divisors (1).

340451 is an equidigital number, since it uses as much as digits as its factorization.

340451 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 240, while the sum is 17.

The square root of 340451 is about 583.4817906327. The cubic root of 340451 is about 69.8261673139.

Adding to 340451 its reverse (154043), we get a palindrome (494494).

The spelling of 340451 in words is "three hundred forty thousand, four hundred fifty-one".