12131003100 has 36 divisors (see below), whose sum is σ = 35099036504. Its totient is φ = 3234934080.

The previous prime is 12131003077. The next prime is 12131003117. The reversal of 12131003100 is 130013121.

It is a super-2 number, since 2×12131003100² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 20218039 + ... + 20218638.

Almost surely, 2^12131003100 is an apocalyptic number.

12131003100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12131003100 is an abundant number, since it is smaller than the sum of its proper divisors (22968033404).

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

12131003100 is a wasteful number, since it uses less digits than its factorization.

12131003100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40436694 (or 40436687 counting only the distinct ones).

The product of its (nonzero) digits is 18, while the sum is 12.

Adding to 12131003100 its reverse (130013121), we get a palindrome (12261016221).

The spelling of 12131003100 in words is "twelve billion, one hundred thirty-one million, three thousand, one hundred".