123343131312 has 60 divisors (see below), whose sum is σ = 345457773960. Its totient is φ = 41082418944.

The previous prime is 123343131311. The next prime is 123343131313. The reversal of 123343131312 is 213131343321.

123343131312 is a `hidden beast` number, since 1 + 2 + 3 + 34 + 313 + 1 + 312 = 666.

It is an interprime number because it is at equal distance from previous prime (123343131311) and next prime (123343131313).

It is a nude number because it is divisible by every one of its digits.

It is not an unprimeable number, because it can be changed into a prime (123343131311) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 146638 + ... + 517869.

It is an arithmetic number, because the mean of its divisors is an integer number (5757629566).

Almost surely, 2^123343131312 is an apocalyptic number.

123343131312 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

123343131312 is an abundant number, since it is smaller than the sum of its proper divisors (222114642648).

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

123343131312 is a wasteful number, since it uses less digits than its factorization.

123343131312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 665810 (or 665801 counting only the distinct ones).

The product of its digits is 3888, while the sum is 27.

Adding to 123343131312 its reverse (213131343321), we get a palindrome (336474474633).

The spelling of 123343131312 in words is "one hundred twenty-three billion, three hundred forty-three million, one hundred thirty-one thousand, three hundred twelve".