12131003444 has 24 divisors (see below), whose sum is σ = 24554324928. Its totient is φ = 5136361920.

The previous prime is 12131003431. The next prime is 12131003501. The reversal of 12131003444 is 44430013121.

It is a super-2 number, since 2×12131003444² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

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, 2607617 + ... + 2612264.

It is an arithmetic number, because the mean of its divisors is an integer number (1023096872).

Almost surely, 2^12131003444 is an apocalyptic number.

12131003444 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

12131003444 is an abundant number, since it is smaller than the sum of its proper divisors (12423321484).

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

12131003444 is a wasteful number, since it uses less digits than its factorization.

12131003444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5219975 (or 5219973 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 23.

Adding to 12131003444 its reverse (44430013121), we get a palindrome (56561016565).

The spelling of 12131003444 in words is "twelve billion, one hundred thirty-one million, three thousand, four hundred forty-four".