4001432231 has 4 divisors (see below), whose sum is σ = 4003351632. Its totient is φ = 3999512832.

The previous prime is 4001432219. The next prime is 4001432233. The reversal of 4001432231 is 1322341004.

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 4001432231 - 2¹⁸ = 4001170087 is a prime.

It is a super-2 number, since 2×4001432231² = 32022919798571274722, 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 (4001432233) 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, 956570 + ... + 960743.

It is an arithmetic number, because the mean of its divisors is an integer number (1000837908).

Almost surely, 2^4001432231 is an apocalyptic number.

4001432231 is a deficient number, since it is larger than the sum of its proper divisors (1919401).

4001432231 is a wasteful number, since it uses less digits than its factorization.

4001432231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1919400.

The product of its (nonzero) digits is 576, while the sum is 20.

The square root of 4001432231 is about 63256.8749702354. The cubic root of 4001432231 is about 1587.5904897764.

Adding to 4001432231 its reverse (1322341004), we get a palindrome (5323773235).

The spelling of 4001432231 in words is "four billion, one million, four hundred thirty-two thousand, two hundred thirty-one".