431143013 has 6 divisors (see below), whose sum is σ = 501533766. Its totient is φ = 369551112.

The previous prime is 431143007. The next prime is 431143033. The reversal of 431143013 is 310341134.

It can be written as a sum of positive squares in only one way, i.e., 431060644 + 82369 = 20762^2 + 287^2 .

It is not a de Polignac number, because 431143013 - 2⁶ = 431142949 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 (431143033) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4399370 + ... + 4399467.

It is an arithmetic number, because the mean of its divisors is an integer number (83588961).

Almost surely, 2^431143013 is an apocalyptic number.

It is an amenable number.

431143013 is a deficient number, since it is larger than the sum of its proper divisors (70390753).

431143013 is an equidigital number, since it uses as much as digits as its factorization.

431143013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8798851 (or 8798844 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 20.

The square root of 431143013 is about 20763.9835532588. The cubic root of 431143013 is about 755.4524212657.

Adding to 431143013 its reverse (310341134), we get a palindrome (741484147).

The spelling of 431143013 in words is "four hundred thirty-one million, one hundred forty-three thousand, thirteen".