111331321123031 has 4 divisors (see below), whose sum is σ = 111331517073000. Its totient is φ = 111331125173064.

The previous prime is 111331321122977. The next prime is 111331321123063. The reversal of 111331321123031 is 130321123133111.

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 111331321123031 - 2³⁸ = 111056443216087 is a prime.

It is a super-2 number, since 2×111331321123031² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111331321123331) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 97120256 + ... + 98259893.

It is an arithmetic number, because the mean of its divisors is an integer number (27832879268250).

Almost surely, 2^{111331321123031} is an apocalyptic number.

111331321123031 is a deficient number, since it is larger than the sum of its proper divisors (195949969).

111331321123031 is an equidigital number, since it uses as much as digits as its factorization.

111331321123031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 195949968.

The product of its (nonzero) digits is 972, while the sum is 26.

Adding to 111331321123031 its reverse (130321123133111), we get a palindrome (241652444256142).

The spelling of 111331321123031 in words is "one hundred eleven trillion, three hundred thirty-one billion, three hundred twenty-one million, one hundred twenty-three thousand, thirty-one".