12312011004 has 12 divisors (see below), whose sum is σ = 28728025704. Its totient is φ = 4104003664.

The previous prime is 12312011003. The next prime is 12312011009. The reversal of 12312011004 is 40011021321.

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-2 number, since 2×12312011004² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12312011003) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 513000447 + ... + 513000470.

It is an arithmetic number, because the mean of its divisors is an integer number (2394002142).

Almost surely, 2^12312011004 is an apocalyptic number.

It is an amenable number.

12312011004 is an abundant number, since it is smaller than the sum of its proper divisors (16416014700).

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

12312011004 is a wasteful number, since it uses less digits than its factorization.

12312011004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1026000924 (or 1026000922 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 15.

Adding to 12312011004 its reverse (40011021321), we get a palindrome (52323032325).

The spelling of 12312011004 in words is "twelve billion, three hundred twelve million, eleven thousand, four".