240404231 has 4 divisors (see below), whose sum is σ = 241996464. Its totient is φ = 238812000.

The previous prime is 240404221. The next prime is 240404239. The reversal of 240404231 is 132404042.

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 240404231 - 2¹⁸ = 240142087 is a prime.

It is a super-2 number, since 2×240404231² = 115588388565402722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (240404239) by changing a digit.

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, 795890 + ... + 796191.

It is an arithmetic number, because the mean of its divisors is an integer number (60499116).

Almost surely, 2^240404231 is an apocalyptic number.

240404231 is a deficient number, since it is larger than the sum of its proper divisors (1592233).

240404231 is a wasteful number, since it uses less digits than its factorization.

240404231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1592232.

The product of its (nonzero) digits is 768, while the sum is 20.

The square root of 240404231 is about 15504.9743953352. The cubic root of 240404231 is about 621.7952054078.

Adding to 240404231 its reverse (132404042), we get a palindrome (372808273).

The spelling of 240404231 in words is "two hundred forty million, four hundred four thousand, two hundred thirty-one".