20321133131 has 8 divisors (see below), whose sum is σ = 21892721760. Its totient is φ = 18750748032.

The previous prime is 20321133047. The next prime is 20321133139. The reversal of 20321133131 is 13133112302.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 20321133131 - 2¹⁰ = 20321132107 is a prime.

It is a super-2 number, since 2×20321133131² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (20321133139) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 265655 + ... + 333488.

It is an arithmetic number, because the mean of its divisors is an integer number (2736590220).

Almost surely, 2^20321133131 is an apocalyptic number.

20321133131 is a deficient number, since it is larger than the sum of its proper divisors (1571588629).

20321133131 is a wasteful number, since it uses less digits than its factorization.

20321133131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 601765.

The product of its (nonzero) digits is 324, while the sum is 20.

Adding to 20321133131 its reverse (13133112302), we get a palindrome (33454245433).

The spelling of 20321133131 in words is "twenty billion, three hundred twenty-one million, one hundred thirty-three thousand, one hundred thirty-one".