431286554021 has 8 divisors (see below), whose sum is σ = 433851012504. Its totient is φ = 428724092160.

The previous prime is 431286554011. The next prime is 431286554057. The reversal of 431286554021 is 120455682134.

It can be written as a sum of positive squares in 4 ways, for example, as 1750501921 + 429536052100 = 41839^2 + 655390^2 .

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-431286554021 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 431286554021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (431286554011) 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, 64736 + ... + 931001.

It is an arithmetic number, because the mean of its divisors is an integer number (54231376563).

Almost surely, 2^431286554021 is an apocalyptic number.

It is an amenable number.

431286554021 is a deficient number, since it is larger than the sum of its proper divisors (2564458483).

431286554021 is a wasteful number, since it uses less digits than its factorization.

431286554021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 998311.

The product of its (nonzero) digits is 230400, while the sum is 41.

The spelling of 431286554021 in words is "four hundred thirty-one billion, two hundred eighty-six million, five hundred fifty-four thousand, twenty-one".