20120323013 has 24 divisors (see below), whose sum is σ = 23989094784. Its totient is φ = 16818446400.

The previous prime is 20120322979. The next prime is 20120323033. The reversal of 20120323013 is 31032302102.

It is not a de Polignac number, because 20120323013 - 2¹⁶ = 20120257477 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20120322982 and 20120323000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20120323033) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 631598 + ... + 662688.

It is an arithmetic number, because the mean of its divisors is an integer number (999545616).

Almost surely, 2^20120323013 is an apocalyptic number.

It is an amenable number.

20120323013 is a deficient number, since it is larger than the sum of its proper divisors (3868771771).

20120323013 is a wasteful number, since it uses less digits than its factorization.

20120323013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31433 (or 31426 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 17.

Adding to 20120323013 its reverse (31032302102), we get a palindrome (51152625115).

The spelling of 20120323013 in words is "twenty billion, one hundred twenty million, three hundred twenty-three thousand, thirteen".