4321020431431 has 4 divisors (see below), whose sum is σ = 4713840470664. Its totient is φ = 3928200392200.

The previous prime is 4321020431407. The next prime is 4321020431461. The reversal of 4321020431431 is 1341340201234.

It is a happy number.

4321020431431 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 4321020431431 - 2³⁹ = 3771264617543 is a prime.

It is a super-2 number, since 2×4321020431431² (a number of 26 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 4321020431431.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4321020431401) 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, 196410019600 + ... + 196410019621.

It is an arithmetic number, because the mean of its divisors is an integer number (1178460117666).

Almost surely, 2^{4321020431431} is an apocalyptic number.

4321020431431 is a deficient number, since it is larger than the sum of its proper divisors (392820039233).

4321020431431 is a wasteful number, since it uses less digits than its factorization.

4321020431431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 392820039232.

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

Adding to 4321020431431 its reverse (1341340201234), we get a palindrome (5662360632665).

The spelling of 4321020431431 in words is "four trillion, three hundred twenty-one billion, twenty million, four hundred thirty-one thousand, four hundred thirty-one".