240690231 has 32 divisors (see below), whose sum is σ = 370944000. Its totient is φ = 154077120.

The previous prime is 240690223. The next prime is 240690251. The reversal of 240690231 is 132096042.

240690231 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 240690231 - 2³ = 240690223 is a prime.

It is a super-2 number, since 2×240690231² = 115863574597666722, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 240690195 and 240690204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (240690211) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 113620 + ... + 115718.

It is an arithmetic number, because the mean of its divisors is an integer number (11592000).

Almost surely, 2^240690231 is an apocalyptic number.

240690231 is a deficient number, since it is larger than the sum of its proper divisors (130253769).

240690231 is a wasteful number, since it uses less digits than its factorization.

240690231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2276 (or 2270 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 27.

The square root of 240690231 is about 15514.1945005211. The cubic root of 240690231 is about 622.0416832589.

The spelling of 240690231 in words is "two hundred forty million, six hundred ninety thousand, two hundred thirty-one".