340540155 has 24 divisors (see below), whose sum is σ = 591711120. Its totient is φ = 181177920.

The previous prime is 340540111. The next prime is 340540171. The reversal of 340540155 is 551045043.

It is not a de Polignac number, because 340540155 - 2¹⁰ = 340539131 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 9825 + ... + 27885.

It is an arithmetic number, because the mean of its divisors is an integer number (24654630).

Almost surely, 2^340540155 is an apocalyptic number.

340540155 is a deficient number, since it is larger than the sum of its proper divisors (251170965).

340540155 is a wasteful number, since it uses less digits than its factorization.

340540155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18491 (or 18488 counting only the distinct ones).

The product of its (nonzero) digits is 6000, while the sum is 27.

The square root of 340540155 is about 18453.7301107391. The cubic root of 340540155 is about 698.3226198303.

Adding to 340540155 its reverse (551045043), we get a palindrome (891585198).

The spelling of 340540155 in words is "three hundred forty million, five hundred forty thousand, one hundred fifty-five".