131123111331 has 16 divisors (see below), whose sum is σ = 175151073440. Its totient is φ = 87255429120.

The previous prime is 131123111309. The next prime is 131123111377. The reversal of 131123111331 is 133111321131.

It is not a de Polignac number, because 131123111331 - 2⁶ = 131123111267 is a prime.

It is a super-2 number, since 2×131123111331² (a number of 23 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 = 131123111298 and 131123111307.

It is not an unprimeable number, because it can be changed into a prime (131123111131) 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, 3679941 + ... + 3715401.

It is an arithmetic number, because the mean of its divisors is an integer number (10946942090).

Almost surely, 2^131123111331 is an apocalyptic number.

131123111331 is a deficient number, since it is larger than the sum of its proper divisors (44027962109).

131123111331 is a wasteful number, since it uses less digits than its factorization.

131123111331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37686.

The product of its digits is 162, while the sum is 21.

Adding to 131123111331 its reverse (133111321131), we get a palindrome (264234432462).

The spelling of 131123111331 in words is "one hundred thirty-one billion, one hundred twenty-three million, one hundred eleven thousand, three hundred thirty-one".