240323155 has 4 divisors (see below), whose sum is σ = 288387792. Its totient is φ = 192258520.

The previous prime is 240323131. The next prime is 240323189. The reversal of 240323155 is 551323042.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 551323042 = 2 ⋅275661521.

It is not a de Polignac number, because 240323155 - 2¹⁷ = 240192083 is a prime.

It is a Duffinian number.

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 3 ways as a sum of consecutive naturals, for example, 24032311 + ... + 24032320.

It is an arithmetic number, because the mean of its divisors is an integer number (72096948).

Almost surely, 2^240323155 is an apocalyptic number.

240323155 is a deficient number, since it is larger than the sum of its proper divisors (48064637).

240323155 is an equidigital number, since it uses as much as digits as its factorization.

240323155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48064636.

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

The square root of 240323155 is about 15502.3596590971. The cubic root of 240323155 is about 621.7252976860.

Adding to 240323155 its reverse (551323042), we get a palindrome (791646197).

The spelling of 240323155 in words is "two hundred forty million, three hundred twenty-three thousand, one hundred fifty-five".