20323431232312 has 64 divisors (see below), whose sum is σ = 42454872028800. Its totient is φ = 9056151336960.

The previous prime is 20323431232303. The next prime is 20323431232337. The reversal of 20323431232312 is 21323213432302.

It is a super-3 number, since 3×20323431232312³ (a number of 41 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 65718193 + ... + 66026719.

It is an arithmetic number, because the mean of its divisors is an integer number (663357375450).

Almost surely, 2^{20323431232312} is an apocalyptic number.

It is an amenable number.

20323431232312 is an abundant number, since it is smaller than the sum of its proper divisors (22131440796488).

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

20323431232312 is a wasteful number, since it uses less digits than its factorization.

20323431232312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 330416 (or 330412 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 31.

Adding to 20323431232312 its reverse (21323213432302), we get a palindrome (41646644664614).

The spelling of 20323431232312 in words is "twenty trillion, three hundred twenty-three billion, four hundred thirty-one million, two hundred thirty-two thousand, three hundred twelve".