4021343123431 has 8 divisors (see below), whose sum is σ = 4057683104160. Its totient is φ = 3985016351232.

The previous prime is 4021343123407. The next prime is 4021343123461. The reversal of 4021343123431 is 1343213431204.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4021343123431 is a prime.

It is a super-2 number, since 2×4021343123431² (a number of 26 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 4021343123393 and 4021343123402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4021343123401) 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, 2689971 + ... + 3908788.

It is an arithmetic number, because the mean of its divisors is an integer number (507210388020).

Almost surely, 2^{4021343123431} is an apocalyptic number.

4021343123431 is a deficient number, since it is larger than the sum of its proper divisors (36339980729).

4021343123431 is a wasteful number, since it uses less digits than its factorization.

4021343123431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6604265.

The product of its (nonzero) digits is 20736, while the sum is 31.

Adding to 4021343123431 its reverse (1343213431204), we get a palindrome (5364556554635).

The spelling of 4021343123431 in words is "four trillion, twenty-one billion, three hundred forty-three million, one hundred twenty-three thousand, four hundred thirty-one".