431771520213 has 48 divisors (see below), whose sum is σ = 681981780480. Its totient is φ = 261059565600.

The previous prime is 431771520211. The next prime is 431771520251. The reversal of 431771520213 is 312025177134.

431771520213 is a `hidden beast` number, since 43 + 1 + 7 + 71 + 520 + 21 + 3 = 666.

It is not a de Polignac number, because 431771520213 - 2¹ = 431771520211 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (431771520211) 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 47 ways as a sum of consecutive naturals, for example, 85344678 + ... + 85349736.

It is an arithmetic number, because the mean of its divisors is an integer number (14207953760).

Almost surely, 2^431771520213 is an apocalyptic number.

It is an amenable number.

431771520213 is a deficient number, since it is larger than the sum of its proper divisors (250210260267).

431771520213 is a wasteful number, since it uses less digits than its factorization.

431771520213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6950 (or 6947 counting only the distinct ones).

The product of its (nonzero) digits is 35280, while the sum is 36.

Adding to 431771520213 its reverse (312025177134), we get a palindrome (743796697347).

The spelling of 431771520213 in words is "four hundred thirty-one billion, seven hundred seventy-one million, five hundred twenty thousand, two hundred thirteen".