131223441131 has 8 divisors (see below), whose sum is σ = 131347002384. Its totient is φ = 131099923360.

The previous prime is 131223441121. The next prime is 131223441137. The reversal of 131223441131 is 131144322131.

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 131223441131 - 2¹⁸ = 131223178987 is a prime.

It is a super-2 number, since 2×131223441131² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 131223441131.

It is not an unprimeable number, because it can be changed into a prime (131223441137) 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, 10058945 + ... + 10071981.

It is an arithmetic number, because the mean of its divisors is an integer number (16418375298).

Almost surely, 2^131223441131 is an apocalyptic number.

131223441131 is a deficient number, since it is larger than the sum of its proper divisors (123561253).

131223441131 is a wasteful number, since it uses less digits than its factorization.

131223441131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21741.

The product of its digits is 1728, while the sum is 26.

Adding to 131223441131 its reverse (131144322131), we get a palindrome (262367763262).

The spelling of 131223441131 in words is "one hundred thirty-one billion, two hundred twenty-three million, four hundred forty-one thousand, one hundred thirty-one".