12231311131 has 16 divisors (see below), whose sum is σ = 13253133600. Its totient is φ = 11221233408.

The previous prime is 12231311129. The next prime is 12231311137. The reversal of 12231311131 is 13111313221.

It is a cyclic number.

It is not a de Polignac number, because 12231311131 - 2¹ = 12231311129 is a prime.

It is a super-2 number, since 2×12231311131² (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 = 12231311099 and 12231311108.

It is not an unprimeable number, because it can be changed into a prime (12231311137) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1833480 + ... + 1840138.

It is an arithmetic number, because the mean of its divisors is an integer number (828320850).

Almost surely, 2^12231311131 is an apocalyptic number.

12231311131 is a deficient number, since it is larger than the sum of its proper divisors (1021822469).

12231311131 is a wasteful number, since it uses less digits than its factorization.

12231311131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7518.

The product of its digits is 108, while the sum is 19.

Adding to 12231311131 its reverse (13111313221), we get a palindrome (25342624352).

The spelling of 12231311131 in words is "twelve billion, two hundred thirty-one million, three hundred eleven thousand, one hundred thirty-one".