111231322131 has 8 divisors (see below), whose sum is σ = 148309980304. Its totient is φ = 74153439360.

The previous prime is 111231322091. The next prime is 111231322141. The reversal of 111231322131 is 131223132111.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 111231322131 - 2⁶ = 111231322067 is a prime.

It is a super-3 number, since 3×111231322131³ (a number of 34 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 111231322098 and 111231322107.

It is not an unprimeable number, because it can be changed into a prime (111231322141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 406335 + ... + 622551.

It is an arithmetic number, because the mean of its divisors is an integer number (18538747538).

Almost surely, 2^111231322131 is an apocalyptic number.

111231322131 is a deficient number, since it is larger than the sum of its proper divisors (37078658173).

111231322131 is a wasteful number, since it uses less digits than its factorization.

111231322131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 387701.

The product of its digits is 216, while the sum is 21.

Adding to 111231322131 its reverse (131223132111), we get a palindrome (242454454242).

The spelling of 111231322131 in words is "one hundred eleven billion, two hundred thirty-one million, three hundred twenty-two thousand, one hundred thirty-one".