12120431310 has 96 divisors (see below), whose sum is σ = 34108401600. Its totient is φ = 2968441344.

The previous prime is 12120431261. The next prime is 12120431317. The reversal of 12120431310 is 1313402121.

12120431310 is a `hidden beast` number, since 121 + 204 + 31 + 310 = 666.

It is a super-2 number, since 2×12120431310² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12120431317) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 206802 + ... + 258858.

It is an arithmetic number, because the mean of its divisors is an integer number (355295850).

Almost surely, 2^12120431310 is an apocalyptic number.

12120431310 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 12120431310, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17054200800).

12120431310 is an abundant number, since it is smaller than the sum of its proper divisors (21987970290).

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

12120431310 is a wasteful number, since it uses less digits than its factorization.

12120431310 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52282 (or 52279 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

Adding to 12120431310 its reverse (1313402121), we get a palindrome (13433833431).

The spelling of 12120431310 in words is "twelve billion, one hundred twenty million, four hundred thirty-one thousand, three hundred ten".