111310031121 has 4 divisors (see below), whose sum is σ = 148413374832. Its totient is φ = 74206687412.

The previous prime is 111310031101. The next prime is 111310031141. The reversal of 111310031121 is 121130013111.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is an interprime number because it is at equal distance from previous prime (111310031101) and next prime (111310031141).

It is a cyclic number.

It is not a de Polignac number, because 111310031121 - 2²⁶ = 111242922257 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 111310031121.

It is not an unprimeable number, because it can be changed into a prime (111310031101) 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, 18551671851 + ... + 18551671856.

It is an arithmetic number, because the mean of its divisors is an integer number (37103343708).

Almost surely, 2^111310031121 is an apocalyptic number.

It is an amenable number.

111310031121 is a deficient number, since it is larger than the sum of its proper divisors (37103343711).

111310031121 is an equidigital number, since it uses as much as digits as its factorization.

111310031121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37103343710.

The product of its (nonzero) digits is 18, while the sum is 15.

Adding to 111310031121 its reverse (121130013111), we get a palindrome (232440044232).

The spelling of 111310031121 in words is "one hundred eleven billion, three hundred ten million, thirty-one thousand, one hundred twenty-one".