11112131320231 has 4 divisors (see below), whose sum is σ = 11765786103792. Its totient is φ = 10458476536672.

The previous prime is 11112131320229. The next prime is 11112131320243. The reversal of 11112131320231 is 13202313121111.

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 11112131320231 - 2¹ = 11112131320229 is a prime.

It is a super-2 number, since 2×11112131320231² (a number of 27 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 (11112131320931) 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, 326827391755 + ... + 326827391788.

It is an arithmetic number, because the mean of its divisors is an integer number (2941446525948).

Almost surely, 2^{11112131320231} is an apocalyptic number.

11112131320231 is a deficient number, since it is larger than the sum of its proper divisors (653654783561).

11112131320231 is an equidigital number, since it uses as much as digits as its factorization.

11112131320231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 653654783560.

The product of its (nonzero) digits is 216, while the sum is 22.

Adding to 11112131320231 its reverse (13202313121111), we get a palindrome (24314444441342).

The spelling of 11112131320231 in words is "eleven trillion, one hundred twelve billion, one hundred thirty-one million, three hundred twenty thousand, two hundred thirty-one".