231012113 has 2 divisors, whose sum is σ = 231012114. Its totient is φ = 231012112.

The previous prime is 231012109. The next prime is 231012143. The reversal of 231012113 is 311210132.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 218537089 + 12475024 = 14783^2 + 3532^2 .

It is a cyclic number.

It is not a de Polignac number, because 231012113 - 2² = 231012109 is a prime.

It is not a weakly prime, because it can be changed into another prime (231012143) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 115506056 + 115506057.

It is an arithmetic number, because the mean of its divisors is an integer number (115506057).

Almost surely, 2^231012113 is an apocalyptic number.

It is an amenable number.

231012113 is a deficient number, since it is larger than the sum of its proper divisors (1).

231012113 is an equidigital number, since it uses as much as digits as its factorization.

231012113 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 36, while the sum is 14.

The square root of 231012113 is about 15199.0826367909. The cubic root of 231012113 is about 613.5899685773.

Adding to 231012113 its reverse (311210132), we get a palindrome (542222245).

The spelling of 231012113 in words is "two hundred thirty-one million, twelve thousand, one hundred thirteen".