340403155 has 32 divisors (see below), whose sum is σ = 444787200. Its totient is φ = 249134592.

The previous prime is 340403137. The next prime is 340403177. The reversal of 340403155 is 551304043.

It is not a de Polignac number, because 340403155 - 2¹⁹ = 339878867 is a prime.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 516216 + ... + 516874.

It is an arithmetic number, because the mean of its divisors is an integer number (13899600).

Almost surely, 2^340403155 is an apocalyptic number.

340403155 is a deficient number, since it is larger than the sum of its proper divisors (104384045).

340403155 is a wasteful number, since it uses less digits than its factorization.

340403155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 843.

The product of its (nonzero) digits is 3600, while the sum is 25.

The square root of 340403155 is about 18450.0177506690. The cubic root of 340403155 is about 698.2289617308.

Adding to 340403155 its reverse (551304043), we get a palindrome (891707198).

The spelling of 340403155 in words is "three hundred forty million, four hundred three thousand, one hundred fifty-five".