240231213 has 12 divisors (see below), whose sum is σ = 347245600. Its totient is φ = 160041096.

The previous prime is 240231209. The next prime is 240231217. The reversal of 240231213 is 312132042.

240231213 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (240231209) and next prime (240231217).

It is not a de Polignac number, because 240231213 - 2² = 240231209 is a prime.

It is a super-2 number, since 2×240231213² = 115422071398902738, 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 (240231217) 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, 5238 + ... + 22536.

Almost surely, 2^240231213 is an apocalyptic number.

It is an amenable number.

240231213 is a deficient number, since it is larger than the sum of its proper divisors (107014387).

240231213 is a wasteful number, since it uses less digits than its factorization.

240231213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18848 (or 18845 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 240231213 is about 15499.3939558939. The cubic root of 240231213 is about 621.6460017361.

Adding to 240231213 its reverse (312132042), we get a palindrome (552363255).

The spelling of 240231213 in words is "two hundred forty million, two hundred thirty-one thousand, two hundred thirteen".