20430132013 has 4 divisors (see below), whose sum is σ = 20577111520. Its totient is φ = 20283152508.

The previous prime is 20430131993. The next prime is 20430132031. The reversal of 20430132013 is 31023103402.

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, and also an emirpimes, since its reverse is a distinct semiprime: 31023103402 = 2 ⋅15511551701.

It is a cyclic number.

It is not a de Polignac number, because 20430132013 - 2¹³ = 20430123821 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 (20430132113) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 73489545 + ... + 73489822.

It is an arithmetic number, because the mean of its divisors is an integer number (5144277880).

Almost surely, 2^20430132013 is an apocalyptic number.

It is an amenable number.

20430132013 is a deficient number, since it is larger than the sum of its proper divisors (146979507).

20430132013 is a wasteful number, since it uses less digits than its factorization.

20430132013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 146979506.

The product of its (nonzero) digits is 432, while the sum is 19.

Adding to 20430132013 its reverse (31023103402), we get a palindrome (51453235415).

The spelling of 20430132013 in words is "twenty billion, four hundred thirty million, one hundred thirty-two thousand, thirteen".