12323131404 has 24 divisors (see below), whose sum is σ = 28797492528. Its totient is φ = 4101493440.

The previous prime is 12323131363. The next prime is 12323131427. The reversal of 12323131404 is 40413132321.

It is a happy number.

It is a super-2 number, since 2×12323131404² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 768867 + ... + 784730.

It is an arithmetic number, because the mean of its divisors is an integer number (1199895522).

Almost surely, 2^12323131404 is an apocalyptic number.

It is an amenable number.

12323131404 is an abundant number, since it is smaller than the sum of its proper divisors (16474361124).

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

12323131404 is a wasteful number, since it uses less digits than its factorization.

12323131404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1554265 (or 1554263 counting only the distinct ones).

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

Adding to 12323131404 its reverse (40413132321), we get a palindrome (52736263725).

The spelling of 12323131404 in words is "twelve billion, three hundred twenty-three million, one hundred thirty-one thousand, four hundred four".