4020331431 has 8 divisors (see below), whose sum is σ = 5402650624. Its totient is φ = 2659116600.

The previous prime is 4020331423. The next prime is 4020331439. The reversal of 4020331431 is 1341330204.

It is an interprime number because it is at equal distance from previous prime (4020331423) and next prime (4020331439).

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

It is not a de Polignac number, because 4020331431 - 2³ = 4020331423 is a prime.

It is a super-2 number, since 2×4020331431² = 32326129630173015522, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 4020331398 and 4020331407.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4020331439) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5275645 + ... + 5276406.

It is an arithmetic number, because the mean of its divisors is an integer number (675331328).

Almost surely, 2^4020331431 is an apocalyptic number.

4020331431 is a deficient number, since it is larger than the sum of its proper divisors (1382319193).

4020331431 is a wasteful number, since it uses less digits than its factorization.

4020331431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10552181.

The product of its (nonzero) digits is 864, while the sum is 21.

The square root of 4020331431 is about 63406.0835488205. The cubic root of 4020331431 is about 1590.0860192377.

Adding to 4020331431 its reverse (1341330204), we get a palindrome (5361661635).

The spelling of 4020331431 in words is "four billion, twenty million, three hundred thirty-one thousand, four hundred thirty-one".