4131232021 has 8 divisors (see below), whose sum is σ = 4734275840. Its totient is φ = 3531405168.

The previous prime is 4131231983. The next prime is 4131232043. The reversal of 4131232021 is 1202321314.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 4131232021 - 2⁹ = 4131231509 is a prime.

It is a super-2 number, since 2×4131232021² = 34134156022671488882, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 4131232021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4131232121) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 801486 + ... + 806623.

It is an arithmetic number, because the mean of its divisors is an integer number (591784480).

Almost surely, 2^4131232021 is an apocalyptic number.

It is an amenable number.

4131232021 is a deficient number, since it is larger than the sum of its proper divisors (603043819).

4131232021 is a wasteful number, since it uses less digits than its factorization.

4131232021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1608483.

The product of its (nonzero) digits is 288, while the sum is 19.

The square root of 4131232021 is about 64274.6608003496. The cubic root of 4131232021 is about 1604.5744119926.

Adding to 4131232021 its reverse (1202321314), we get a palindrome (5333553335).

The spelling of 4131232021 in words is "four billion, one hundred thirty-one million, two hundred thirty-two thousand, twenty-one".