12031131101 has 4 divisors (see below), whose sum is σ = 13124870304. Its totient is φ = 10937391900.

The previous prime is 12031131097. The next prime is 12031131181. The reversal of 12031131101 is 10113113021.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 12031131101 - 2² = 12031131097 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12031131181) 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, 546869585 + ... + 546869606.

It is an arithmetic number, because the mean of its divisors is an integer number (3281217576).

Almost surely, 2^12031131101 is an apocalyptic number.

12031131101 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

12031131101 is a deficient number, since it is larger than the sum of its proper divisors (1093739203).

12031131101 is a wasteful number, since it uses less digits than its factorization.

12031131101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1093739202.

The product of its (nonzero) digits is 18, while the sum is 14.

Adding to 12031131101 its reverse (10113113021), we get a palindrome (22144244122).

The spelling of 12031131101 in words is "twelve billion, thirty-one million, one hundred thirty-one thousand, one hundred one".