4021343120431 has 16 divisors (see below), whose sum is σ = 4949459794944. Its totient is φ = 3181648476384.

The previous prime is 4021343120413. The next prime is 4021343120467. The reversal of 4021343120431 is 1340213431204.

It is a happy number.

It is a de Polignac number, because none of the positive numbers 2^k-4021343120431 is a prime.

It is a super-2 number, since 2×4021343120431² (a number of 26 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 4021343120431.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4021343120131) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3630780 + ... + 4607086.

It is an arithmetic number, because the mean of its divisors is an integer number (309341237184).

Almost surely, 2^{4021343120431} is an apocalyptic number.

4021343120431 is a deficient number, since it is larger than the sum of its proper divisors (928116674513).

4021343120431 is a wasteful number, since it uses less digits than its factorization.

4021343120431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1021590.

The product of its (nonzero) digits is 6912, while the sum is 28.

Adding to 4021343120431 its reverse (1340213431204), we get a palindrome (5361556551635).

The spelling of 4021343120431 in words is "four trillion, twenty-one billion, three hundred forty-three million, one hundred twenty thousand, four hundred thirty-one".