431500552213 has 4 divisors (see below), whose sum is σ = 432137924460. Its totient is φ = 430863179968.

The previous prime is 431500552193. The next prime is 431500552247. The reversal of 431500552213 is 312255005134.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 314414768529 + 117085783684 = 560727^2 + 342178^2 .

It is a cyclic number.

It is not a de Polignac number, because 431500552213 - 2²⁹ = 430963681301 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (431500552283) 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, 318685108 + ... + 318686461.

It is an arithmetic number, because the mean of its divisors is an integer number (108034481115).

Almost surely, 2^431500552213 is an apocalyptic number.

It is an amenable number.

431500552213 is a deficient number, since it is larger than the sum of its proper divisors (637372247).

431500552213 is an equidigital number, since it uses as much as digits as its factorization.

431500552213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 637372246.

The product of its (nonzero) digits is 18000, while the sum is 31.

Adding to 431500552213 its reverse (312255005134), we get a palindrome (743755557347).

The spelling of 431500552213 in words is "four hundred thirty-one billion, five hundred million, five hundred fifty-two thousand, two hundred thirteen".