12312311310 has 128 divisors (see below), whose sum is σ = 35689973760. Its totient is φ = 3002306688.

The previous prime is 12312311299. The next prime is 12312311329. The reversal of 12312311310 is 1311321321.

12312311310 is a `hidden beast` number, since 12 + 31 + 2 + 311 + 310 = 666.

It is a super-2 number, since 2×12312311310² (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 an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 359179 + ... + 391961.

It is an arithmetic number, because the mean of its divisors is an integer number (278827920).

Almost surely, 2^12312311310 is an apocalyptic number.

12312311310 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 12312311310, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17844986880).

12312311310 is an abundant number, since it is smaller than the sum of its proper divisors (23377662450).

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

12312311310 is a wasteful number, since it uses less digits than its factorization.

12312311310 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32919 (or 32913 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 18.

Adding to 12312311310 its reverse (1311321321), we get a palindrome (13623632631).

The spelling of 12312311310 in words is "twelve billion, three hundred twelve million, three hundred eleven thousand, three hundred ten".