4140021231 has 12 divisors (see below), whose sum is σ = 5980611000. Its totient is φ = 2759746320.

The previous prime is 4140021217. The next prime is 4140021241. The reversal of 4140021231 is 1321200414.

4140021231 is a `hidden beast` number, since 414 + 0 + 0 + 21 + 231 = 666.

It is not a de Polignac number, because 4140021231 - 2⁹ = 4140020719 is a prime.

It is a super-2 number, since 2×4140021231² = 34279551586261510722, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4140021241) 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, 131020 + ... + 159518.

It is an arithmetic number, because the mean of its divisors is an integer number (498384250).

Almost surely, 2^4140021231 is an apocalyptic number.

4140021231 is a deficient number, since it is larger than the sum of its proper divisors (1840589769).

4140021231 is a wasteful number, since it uses less digits than its factorization.

4140021231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44646 (or 44643 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

The square root of 4140021231 is about 64342.9967517833. The cubic root of 4140021231 is about 1605.7115184577.

Adding to 4140021231 its reverse (1321200414), we get a palindrome (5461221645).

The spelling of 4140021231 in words is "four billion, one hundred forty million, twenty-one thousand, two hundred thirty-one".