12311220131 has 8 divisors (see below), whose sum is σ = 14171189760. Its totient is φ = 10476556488.

The previous prime is 12311220113. The next prime is 12311220133. The reversal of 12311220131 is 13102211321.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 12311220131 - 2⁶ = 12311220067 is a prime.

It is a super-2 number, since 2×12311220131² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (12311220133) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6325451 + ... + 6327396.

It is an arithmetic number, because the mean of its divisors is an integer number (1771398720).

Almost surely, 2^12311220131 is an apocalyptic number.

12311220131 is a deficient number, since it is larger than the sum of its proper divisors (1859969629).

12311220131 is a wasteful number, since it uses less digits than its factorization.

12311220131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12652993.

The product of its (nonzero) digits is 72, while the sum is 17.

Adding to 12311220131 its reverse (13102211321), we get a palindrome (25413431452).

The spelling of 12311220131 in words is "twelve billion, three hundred eleven million, two hundred twenty thousand, one hundred thirty-one".