431341311021 has 16 divisors (see below), whose sum is σ = 589178042880. Its totient is φ = 280533415680.

The previous prime is 431341310993. The next prime is 431341311047. The reversal of 431341311021 is 120113143134.

It is a happy number.

It is not a de Polignac number, because 431341311021 - 2³⁰ = 430267569197 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 431341310982 and 431341311000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (431341318021) 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 15 ways as a sum of consecutive naturals, for example, 2827620 + ... + 2976258.

It is an arithmetic number, because the mean of its divisors is an integer number (36823627680).

Almost surely, 2^431341311021 is an apocalyptic number.

431341311021 is a gapful number since it is divisible by the number (41) formed by its first and last digit.

It is an amenable number.

431341311021 is a deficient number, since it is larger than the sum of its proper divisors (157836731859).

431341311021 is a wasteful number, since it uses less digits than its factorization.

431341311021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 172276.

The product of its (nonzero) digits is 864, while the sum is 24.

Adding to 431341311021 its reverse (120113143134), we get a palindrome (551454454155).

The spelling of 431341311021 in words is "four hundred thirty-one billion, three hundred forty-one million, three hundred eleven thousand, twenty-one".