431000020013 has 4 divisors (see below), whose sum is σ = 431368082688. Its totient is φ = 430631957340.

The previous prime is 431000019941. The next prime is 431000020019. The reversal of 431000020013 is 310020000134.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 431000020013 - 2¹⁶ = 430999954477 is a prime.

It is a super-2 number, since 2×431000020013² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 431000020013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (431000020019) 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, 184029581 + ... + 184031922.

It is an arithmetic number, because the mean of its divisors is an integer number (107842020672).

Almost surely, 2^431000020013 is an apocalyptic number.

It is an amenable number.

431000020013 is a deficient number, since it is larger than the sum of its proper divisors (368062675).

431000020013 is a wasteful number, since it uses less digits than its factorization.

431000020013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 368062674.

The product of its (nonzero) digits is 72, while the sum is 14.

Adding to 431000020013 its reverse (310020000134), we get a palindrome (741020020147).

The spelling of 431000020013 in words is "four hundred thirty-one billion, twenty thousand, thirteen".