20331323001331 has 16 divisors (see below), whose sum is σ = 21833098797600. Its totient is φ = 18875065478400.

The previous prime is 20331323001329. The next prime is 20331323001347. The reversal of 20331323001331 is 13310032313302.

It is a cyclic number.

It is not a de Polignac number, because 20331323001331 - 2¹ = 20331323001329 is a prime.

It is a super-2 number, since 2×20331323001331² (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 = 20331323001296 and 20331323001305.

It is not an unprimeable number, because it can be changed into a prime (20331323001391) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 32294410 + ... + 32917951.

It is an arithmetic number, because the mean of its divisors is an integer number (1364568674850).

Almost surely, 2^{20331323001331} is an apocalyptic number.

20331323001331 is a deficient number, since it is larger than the sum of its proper divisors (1501775796269).

20331323001331 is a wasteful number, since it uses less digits than its factorization.

20331323001331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65212710.

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

Adding to 20331323001331 its reverse (13310032313302), we get a palindrome (33641355314633).

The spelling of 20331323001331 in words is "twenty trillion, three hundred thirty-one billion, three hundred twenty-three million, one thousand, three hundred thirty-one".