340540451 has 8 divisors (see below), whose sum is σ = 346142160. Its totient is φ = 334974592.

The previous prime is 340540399. The next prime is 340540463. The reversal of 340540451 is 154045043.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-340540451 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 340540451.

It is not an unprimeable number, because it can be changed into a prime (340542451) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10535 + ... + 28143.

It is an arithmetic number, because the mean of its divisors is an integer number (43267770).

Almost surely, 2^340540451 is an apocalyptic number.

340540451 is a deficient number, since it is larger than the sum of its proper divisors (5601709).

340540451 is a wasteful number, since it uses less digits than its factorization.

340540451 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17925.

The product of its (nonzero) digits is 4800, while the sum is 26.

The square root of 340540451 is about 18453.7381307962. The cubic root of 340540451 is about 698.3228221593.

Adding to 340540451 its reverse (154045043), we get a palindrome (494585494).

The spelling of 340540451 in words is "three hundred forty million, five hundred forty thousand, four hundred fifty-one".