12311013131 has 8 divisors (see below), whose sum is σ = 13061322000. Its totient is φ = 11563607808.

The previous prime is 12311013109. The next prime is 12311013157. The reversal of 12311013131 is 13131011321.

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

It is a de Polignac number, because none of the positive numbers 2^k-12311013131 is a prime.

It is a super-2 number, since 2×12311013131² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12311013161) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 717146 + ... + 734111.

It is an arithmetic number, because the mean of its divisors is an integer number (1632665250).

Almost surely, 2^12311013131 is an apocalyptic number.

12311013131 is a deficient number, since it is larger than the sum of its proper divisors (750308869).

12311013131 is a wasteful number, since it uses less digits than its factorization.

12311013131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1451773.

The product of its (nonzero) digits is 54, while the sum is 17.

Adding to 12311013131 its reverse (13131011321), we get a palindrome (25442024452).

The spelling of 12311013131 in words is "twelve billion, three hundred eleven million, thirteen thousand, one hundred thirty-one".