20313133121 has 8 divisors (see below), whose sum is σ = 20361890688. Its totient is φ = 20264418000.

The previous prime is 20313133079. The next prime is 20313133151. The reversal of 20313133121 is 12133131302.

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 20313133121 - 2¹⁴ = 20313116737 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20313133093 and 20313133102.

It is not an unprimeable number, because it can be changed into a prime (20313133151) 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, 1078616 + ... + 1097286.

It is an arithmetic number, because the mean of its divisors is an integer number (2545236336).

Almost surely, 2^20313133121 is an apocalyptic number.

It is an amenable number.

20313133121 is a deficient number, since it is larger than the sum of its proper divisors (48757567).

20313133121 is a wasteful number, since it uses less digits than its factorization.

20313133121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21223.

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

Adding to 20313133121 its reverse (12133131302), we get a palindrome (32446264423).

The spelling of 20313133121 in words is "twenty billion, three hundred thirteen million, one hundred thirty-three thousand, one hundred twenty-one".