131021112311 has 4 divisors (see below), whose sum is σ = 131023931400. Its totient is φ = 131018293224.

The previous prime is 131021112293. The next prime is 131021112317. The reversal of 131021112311 is 113211120131.

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

It is a cyclic number.

It is not a de Polignac number, because 131021112311 - 2²⁶ = 130954003447 is a prime.

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 131021112311.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131021112317) 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, 1338641 + ... + 1433178.

It is an arithmetic number, because the mean of its divisors is an integer number (32755982850).

Almost surely, 2^131021112311 is an apocalyptic number.

131021112311 is a deficient number, since it is larger than the sum of its proper divisors (2819089).

131021112311 is an equidigital number, since it uses as much as digits as its factorization.

131021112311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2819088.

The product of its (nonzero) digits is 36, while the sum is 17.

Adding to 131021112311 its reverse (113211120131), we get a palindrome (244232232442).

The spelling of 131021112311 in words is "one hundred thirty-one billion, twenty-one million, one hundred twelve thousand, three hundred eleven".