340321551 has 8 divisors (see below), whose sum is σ = 455311920. Its totient is φ = 226106112.

The previous prime is 340321543. The next prime is 340321561. The reversal of 340321551 is 155123043.

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

It is not a de Polignac number, because 340321551 - 2³ = 340321543 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (340321511) 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 in 7 ways as a sum of consecutive naturals, for example, 192706 + ... + 194463.

It is an arithmetic number, because the mean of its divisors is an integer number (56913990).

Almost surely, 2^340321551 is an apocalyptic number.

340321551 is a deficient number, since it is larger than the sum of its proper divisors (114990369).

340321551 is a wasteful number, since it uses less digits than its factorization.

340321551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 387465.

The product of its (nonzero) digits is 1800, while the sum is 24.

The square root of 340321551 is about 18447.8061297272. The cubic root of 340321551 is about 698.1731623754.

Adding to 340321551 its reverse (155123043), we get a palindrome (495444594).

The spelling of 340321551 in words is "three hundred forty million, three hundred twenty-one thousand, five hundred fifty-one".