12312110420 has 24 divisors (see below), whose sum is σ = 25860064104. Its totient is φ = 4923961856.

The previous prime is 12312110359. The next prime is 12312110423. The reversal of 12312110420 is 2401121321.

It can be written as a sum of positive squares in 4 ways, for example, as 8013472324 + 4298638096 = 89518^2 + 65564^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12312110423) 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, 65744 + ... + 170136.

It is an arithmetic number, because the mean of its divisors is an integer number (1077502671).

Almost surely, 2^12312110420 is an apocalyptic number.

12312110420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12312110420 is an abundant number, since it is smaller than the sum of its proper divisors (13547953684).

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

12312110420 is a wasteful number, since it uses less digits than its factorization.

12312110420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 110299 (or 110297 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 17.

Adding to 12312110420 its reverse (2401121321), we get a palindrome (14713231741).

The spelling of 12312110420 in words is "twelve billion, three hundred twelve million, one hundred ten thousand, four hundred twenty".