12331020402312 has 16 divisors (see below), whose sum is σ = 30827551005840. Its totient is φ = 4110340134096.

The previous prime is 12331020402307. The next prime is 12331020402313. The reversal of 12331020402312 is 21320402013321.

It is a Harshad number since it is a multiple of its sum of digits (24), and also a Moran number because the ratio is a prime number: 513792516763 = 12331020402312 / (1 + 2 + 3 + 3 + 1 + 0 + 2 + 0 + 4 + 0 + 2 + 3 + 1 + 2).

It is not an unprimeable number, because it can be changed into a prime (12331020402313) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 256896258358 + ... + 256896258405.

It is an arithmetic number, because the mean of its divisors is an integer number (1926721937865).

Almost surely, 2^{12331020402312} is an apocalyptic number.

12331020402312 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

12331020402312 is an abundant number, since it is smaller than the sum of its proper divisors (18496530603528).

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

12331020402312 is a wasteful number, since it uses less digits than its factorization.

12331020402312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 513792516772 (or 513792516768 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 24.

Adding to 12331020402312 its reverse (21320402013321), we get a palindrome (33651422415633).

The spelling of 12331020402312 in words is "twelve trillion, three hundred thirty-one billion, twenty million, four hundred two thousand, three hundred twelve".