231112440155 has 8 divisors (see below), whose sum is σ = 286281216384. Its totient is φ = 178925760000.

The previous prime is 231112440121. The next prime is 231112440227. The reversal of 231112440155 is 551044211132.

It is a happy number.

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

It is not a de Polignac number, because 231112440155 - 2²⁶ = 231045331291 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 745523846 + ... + 745524155.

It is an arithmetic number, because the mean of its divisors is an integer number (35785152048).

Almost surely, 2^231112440155 is an apocalyptic number.

231112440155 is a deficient number, since it is larger than the sum of its proper divisors (55168776229).

231112440155 is a wasteful number, since it uses less digits than its factorization.

231112440155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1491048037.

The product of its (nonzero) digits is 4800, while the sum is 29.

Adding to 231112440155 its reverse (551044211132), we get a palindrome (782156651287).

The spelling of 231112440155 in words is "two hundred thirty-one billion, one hundred twelve million, four hundred forty thousand, one hundred fifty-five".