113231121 has 8 divisors (see below), whose sum is σ = 151050144. Its totient is φ = 75449760.

The previous prime is 113231119. The next prime is 113231141. The reversal of 113231121 is 121132311.

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 113231121 - 2¹ = 113231119 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 113231121.

It is not an unprimeable number, because it can be changed into a prime (113231141) 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, 1431 + ... + 15116.

It is an arithmetic number, because the mean of its divisors is an integer number (18881268).

Almost surely, 2^113231121 is an apocalyptic number.

It is an amenable number.

113231121 is a deficient number, since it is larger than the sum of its proper divisors (37819023).

113231121 is a wasteful number, since it uses less digits than its factorization.

113231121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18831.

The product of its digits is 36, while the sum is 15.

The square root of 113231121 is about 10641.0112771296. The cubic root of 113231121 is about 483.7881973457.

Adding to 113231121 its reverse (121132311), we get a palindrome (234363432).

The spelling of 113231121 in words is "one hundred thirteen million, two hundred thirty-one thousand, one hundred twenty-one".