240340351 has 4 divisors (see below), whose sum is σ = 240518304. Its totient is φ = 240162400.

The previous prime is 240340349. The next prime is 240340369. The reversal of 240340351 is 153043042.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 240340351 - 2¹ = 240340349 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (240340651) 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, 86935 + ... + 89656.

It is an arithmetic number, because the mean of its divisors is an integer number (60129576).

Almost surely, 2^240340351 is an apocalyptic number.

240340351 is a deficient number, since it is larger than the sum of its proper divisors (177953).

240340351 is a wasteful number, since it uses less digits than its factorization.

240340351 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 177952.

The product of its (nonzero) digits is 1440, while the sum is 22.

The square root of 240340351 is about 15502.9142744195. The cubic root of 240340351 is about 621.7401262380.

Adding to 240340351 its reverse (153043042), we get a palindrome (393383393).

The spelling of 240340351 in words is "two hundred forty million, three hundred forty thousand, three hundred fifty-one".