111310121231 has 8 divisors (see below), whose sum is σ = 114136127280. Its totient is φ = 108518370048.

The previous prime is 111310121173. The next prime is 111310121323. The reversal of 111310121231 is 132121013111.

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

It is a cyclic number.

It is not a de Polignac number, because 111310121231 - 2¹⁴ = 111310104847 is a prime.

It is a super-2 number, since 2×111310121231² (a number of 23 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 (111310121831) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8557136 + ... + 8570133.

It is an arithmetic number, because the mean of its divisors is an integer number (14267015910).

Almost surely, 2^111310121231 is an apocalyptic number.

111310121231 is a deficient number, since it is larger than the sum of its proper divisors (2826006049).

111310121231 is an equidigital number, since it uses as much as digits as its factorization.

111310121231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17127433.

The product of its (nonzero) digits is 36, while the sum is 17.

Adding to 111310121231 its reverse (132121013111), we get a palindrome (243431134342).

The spelling of 111310121231 in words is "one hundred eleven billion, three hundred ten million, one hundred twenty-one thousand, two hundred thirty-one".