111231113031231 has 16 divisors (see below), whose sum is σ = 148974950442240. Its totient is φ = 73820804907200.

The previous prime is 111231113031193. The next prime is 111231113031281. The reversal of 111231113031231 is 132130311132111.

It is a cyclic number.

It is not a de Polignac number, because 111231113031231 - 2¹³ = 111231113023039 is a prime.

It is a super-2 number, since 2×111231113031231² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111231113031281) 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, 12736545 + ... + 19613306.

It is an arithmetic number, because the mean of its divisors is an integer number (9310934402640).

Almost surely, 2^{111231113031231} is an apocalyptic number.

111231113031231 is a deficient number, since it is larger than the sum of its proper divisors (37743837411009).

111231113031231 is a wasteful number, since it uses less digits than its factorization.

111231113031231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32355006.

The product of its (nonzero) digits is 324, while the sum is 24.

Adding to 111231113031231 its reverse (132130311132111), we get a palindrome (243361424163342).

The spelling of 111231113031231 in words is "one hundred eleven trillion, two hundred thirty-one billion, one hundred thirteen million, thirty-one thousand, two hundred thirty-one".