431052203553521 has 16 divisors (see below), whose sum is σ = 474133796981376. Its totient is φ = 391858400538000.

The previous prime is 431052203553469. The next prime is 431052203553527. The reversal of 431052203553521 is 125355302250134.

It is not a de Polignac number, because 431052203553521 - 2¹⁰ = 431052203552497 is a prime.

It is a super-2 number, since 2×431052203553521² (a number of 30 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (431052203553527) 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, 69749831 + ... + 75677891.

It is an arithmetic number, because the mean of its divisors is an integer number (29633362311336).

Almost surely, 2^{431052203553521} is an apocalyptic number.

It is an amenable number.

431052203553521 is a deficient number, since it is larger than the sum of its proper divisors (43081593427855).

431052203553521 is an equidigital number, since it uses as much as digits as its factorization.

431052203553521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5982725 (or 5982703 counting only the distinct ones).

The product of its (nonzero) digits is 540000, while the sum is 41.

The spelling of 431052203553521 in words is "four hundred thirty-one trillion, fifty-two billion, two hundred three million, five hundred fifty-three thousand, five hundred twenty-one".