231133113 has 12 divisors (see below), whose sum is σ = 342002388. Its totient is φ = 150330240.

The previous prime is 231133109. The next prime is 231133153. The reversal of 231133113 is 311331132.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 56972304 + 174160809 = 7548^2 + 13197^2 .

It is not a de Polignac number, because 231133113 - 2² = 231133109 is a prime.

It is not an unprimeable number, because it can be changed into a prime (231133153) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 312820 + ... + 313557.

It is an arithmetic number, because the mean of its divisors is an integer number (28500199).

Almost surely, 2^231133113 is an apocalyptic number.

It is an amenable number.

231133113 is a deficient number, since it is larger than the sum of its proper divisors (110869275).

231133113 is a wasteful number, since it uses less digits than its factorization.

231133113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 626424 (or 626421 counting only the distinct ones).

The product of its digits is 162, while the sum is 18.

The square root of 231133113 is about 15203.0626190909. The cubic root of 231133113 is about 613.6970790175.

Adding to 231133113 its reverse (311331132), we get a palindrome (542464245).

It can be divided in two parts, 2 and 31133113, that multiplied together give a palindrome (62266226).

The spelling of 231133113 in words is "two hundred thirty-one million, one hundred thirty-three thousand, one hundred thirteen".