20231321310312 has 192 divisors, whose sum is σ = 61473680785920. Its totient is φ = 5434182577152.

The previous prime is 20231321310287. The next prime is 20231321310359. The reversal of 20231321310312 is 21301312313202.

It is a super-2 number, since 2×20231321310312² (a number of 27 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 42635463 + ... + 43107369.

It is an arithmetic number, because the mean of its divisors is an integer number (320175420760).

Almost surely, 2^{20231321310312} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20231321310312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30736840392960).

20231321310312 is an abundant number, since it is smaller than the sum of its proper divisors (41242359475608).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20231321310312 is a wasteful number, since it uses less digits than its factorization.

20231321310312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 472840 (or 472819 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 24.

Adding to 20231321310312 its reverse (21301312313202), we get a palindrome (41532633623514).

The spelling of 20231321310312 in words is "twenty trillion, two hundred thirty-one billion, three hundred twenty-one million, three hundred ten thousand, three hundred twelve".