4020432331 has 4 divisors (see below), whose sum is σ = 4020604992. Its totient is φ = 4020259672.

The previous prime is 4020432301. The next prime is 4020432337. The reversal of 4020432331 is 1332340204.

It is a happy number.

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 4020432331 - 2⁷ = 4020432203 is a prime.

It is a super-2 number, since 2×4020432331² = 32327752256300187122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4020432337) 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, 44716 + ... + 100201.

It is an arithmetic number, because the mean of its divisors is an integer number (1005151248).

Almost surely, 2^4020432331 is an apocalyptic number.

4020432331 is a deficient number, since it is larger than the sum of its proper divisors (172661).

4020432331 is a wasteful number, since it uses less digits than its factorization.

4020432331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 172660.

The product of its (nonzero) digits is 1728, while the sum is 22.

The square root of 4020432331 is about 63406.8792088051. The cubic root of 4020432331 is about 1590.0993214857.

Adding to 4020432331 its reverse (1332340204), we get a palindrome (5352772535).

The spelling of 4020432331 in words is "four billion, twenty million, four hundred thirty-two thousand, three hundred thirty-one".