240345331 has 12 divisors (see below), whose sum is σ = 252433440. Its totient is φ = 228813200.

The previous prime is 240345323. The next prime is 240345353. The reversal of 240345331 is 133543042.

It is not a de Polignac number, because 240345331 - 2³ = 240345323 is a prime.

It is a super-2 number, since 2×240345331² = 115531756266999122, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 240345296 and 240345305.

It is not an unprimeable number, because it can be changed into a prime (240345431) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 125481 + ... + 127381.

It is an arithmetic number, because the mean of its divisors is an integer number (21036120).

Almost surely, 2^240345331 is an apocalyptic number.

240345331 is a deficient number, since it is larger than the sum of its proper divisors (12088109).

240345331 is a wasteful number, since it uses less digits than its factorization.

240345331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2186 (or 2163 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 25.

The square root of 240345331 is about 15503.0748885503. The cubic root of 240345331 is about 621.7444204877.

Adding to 240345331 its reverse (133543042), we get a palindrome (373888373).

The spelling of 240345331 in words is "two hundred forty million, three hundred forty-five thousand, three hundred thirty-one".