12107391131 has 4 divisors (see below), whose sum is σ = 13208063064. Its totient is φ = 11006719200.

The previous prime is 12107391113. The next prime is 12107391133. The reversal of 12107391131 is 13119370121.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12107391131 is a prime.

It is a super-2 number, since 2×12107391131² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12107391094 and 12107391103.

It is not an unprimeable number, because it can be changed into a prime (12107391133) 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, 550335950 + ... + 550335971.

It is an arithmetic number, because the mean of its divisors is an integer number (3302015766).

Almost surely, 2^12107391131 is an apocalyptic number.

12107391131 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

12107391131 is a deficient number, since it is larger than the sum of its proper divisors (1100671933).

12107391131 is a wasteful number, since it uses less digits than its factorization.

12107391131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1100671932.

The product of its (nonzero) digits is 1134, while the sum is 29.

The spelling of 12107391131 in words is "twelve billion, one hundred seven million, three hundred ninety-one thousand, one hundred thirty-one".