131112233231 has 16 divisors (see below), whose sum is σ = 150770543616. Its totient is φ = 111686197056.

The previous prime is 131112233191. The next prime is 131112233237. The reversal of 131112233231 is 132332211131.

It is not a de Polignac number, because 131112233231 - 2⁶ = 131112233167 is a prime.

It is a super-2 number, since 2×131112233231² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 131112233197 and 131112233206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131112233237) 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, 8323595 + ... + 8339331.

It is an arithmetic number, because the mean of its divisors is an integer number (9423158976).

Almost surely, 2^131112233231 is an apocalyptic number.

131112233231 is a deficient number, since it is larger than the sum of its proper divisors (19658310385).

131112233231 is a wasteful number, since it uses less digits than its factorization.

131112233231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23038.

The product of its digits is 648, while the sum is 23.

Adding to 131112233231 its reverse (132332211131), we get a palindrome (263444444362).

The spelling of 131112233231 in words is "one hundred thirty-one billion, one hundred twelve million, two hundred thirty-three thousand, two hundred thirty-one".