43423322013 has 12 divisors (see below), whose sum is σ = 64745885568. Its totient is φ = 28015046280.

The previous prime is 43423321987. The next prime is 43423322021. The reversal of 43423322013 is 31022332434.

43423322013 is a `hidden beast` number, since 4 + 3 + 423 + 3 + 220 + 13 = 666.

It is not a de Polignac number, because 43423322013 - 2⁸ = 43423321757 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (43423322023) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 77819295 + ... + 77819852.

It is an arithmetic number, because the mean of its divisors is an integer number (5395490464).

Almost surely, 2^43423322013 is an apocalyptic number.

It is an amenable number.

43423322013 is a deficient number, since it is larger than the sum of its proper divisors (21322563555).

43423322013 is a wasteful number, since it uses less digits than its factorization.

43423322013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 155639184 (or 155639181 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 27.

Adding to 43423322013 its reverse (31022332434), we get a palindrome (74445654447).

The spelling of 43423322013 in words is "forty-three billion, four hundred twenty-three million, three hundred twenty-two thousand, thirteen".