431022013 has 4 divisors (see below), whose sum is σ = 433210140. Its totient is φ = 428833888.

The previous prime is 431021959. The next prime is 431022017. The reversal of 431022013 is 310220134.

It is a happy number.

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 424277604 + 6744409 = 20598^2 + 2597^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-431022013 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 (431022017) 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 3 ways as a sum of consecutive naturals, for example, 1093768 + ... + 1094161.

It is an arithmetic number, because the mean of its divisors is an integer number (108302535).

Almost surely, 2^431022013 is an apocalyptic number.

It is an amenable number.

431022013 is a deficient number, since it is larger than the sum of its proper divisors (2188127).

431022013 is a wasteful number, since it uses less digits than its factorization.

431022013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2188126.

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 431022013 is about 20761.0696497074. The cubic root of 431022013 is about 755.3817422466.

Adding to 431022013 its reverse (310220134), we get a palindrome (741242147).

The spelling of 431022013 in words is "four hundred thirty-one million, twenty-two thousand, thirteen".