340232155 has 4 divisors (see below), whose sum is σ = 408278592. Its totient is φ = 272185720.

The previous prime is 340232153. The next prime is 340232159. The reversal of 340232155 is 551232043.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 551232043 = 101 ⋅5457743.

It is not a de Polignac number, because 340232155 - 2¹ = 340232153 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (340232153) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 34023211 + ... + 34023220.

It is an arithmetic number, because the mean of its divisors is an integer number (102069648).

Almost surely, 2^340232155 is an apocalyptic number.

340232155 is a deficient number, since it is larger than the sum of its proper divisors (68046437).

340232155 is an equidigital number, since it uses as much as digits as its factorization.

340232155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68046436.

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

The square root of 340232155 is about 18445.3830266547. The cubic root of 340232155 is about 698.1120247507.

Adding to 340232155 its reverse (551232043), we get a palindrome (891464198).

The spelling of 340232155 in words is "three hundred forty million, two hundred thirty-two thousand, one hundred fifty-five".