240506231 has 4 divisors (see below), whose sum is σ = 274864272. Its totient is φ = 206148192.

The previous prime is 240506221. The next prime is 240506269. The reversal of 240506231 is 132605042.

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 240506231 - 2¹⁸ = 240244087 is a prime.

It is a super-2 number, since 2×240506231² = 115686494299650722, 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 = 240506197 and 240506206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (240506221) 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, 17179010 + ... + 17179023.

It is an arithmetic number, because the mean of its divisors is an integer number (68716068).

Almost surely, 2^240506231 is an apocalyptic number.

240506231 is a deficient number, since it is larger than the sum of its proper divisors (34358041).

240506231 is an equidigital number, since it uses as much as digits as its factorization.

240506231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34358040.

The product of its (nonzero) digits is 1440, while the sum is 23.

The square root of 240506231 is about 15508.2633134726. The cubic root of 240506231 is about 621.8831325115.

The spelling of 240506231 in words is "two hundred forty million, five hundred six thousand, two hundred thirty-one".