20323331003131 has 4 divisors (see below), whose sum is σ = 21886664157232. Its totient is φ = 18759997849032.

The previous prime is 20323331003123. The next prime is 20323331003147. The reversal of 20323331003131 is 13130013332302.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 20323331003131 - 2³ = 20323331003123 is a prime.

It is a super-2 number, since 2×20323331003131² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20323331003096 and 20323331003105.

It is not an unprimeable number, because it can be changed into a prime (20323331000131) 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, 781666577031 + ... + 781666577056.

It is an arithmetic number, because the mean of its divisors is an integer number (5471666039308).

Almost surely, 2^{20323331003131} is an apocalyptic number.

20323331003131 is a deficient number, since it is larger than the sum of its proper divisors (1563333154101).

20323331003131 is a wasteful number, since it uses less digits than its factorization.

20323331003131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1563333154100.

The product of its (nonzero) digits is 2916, while the sum is 25.

Adding to 20323331003131 its reverse (13130013332302), we get a palindrome (33453344335433).

The spelling of 20323331003131 in words is "twenty trillion, three hundred twenty-three billion, three hundred thirty-one million, three thousand, one hundred thirty-one".