231134129 has 2 divisors, whose sum is σ = 231134130. Its totient is φ = 231134128.

The previous prime is 231134119. The next prime is 231134149. The reversal of 231134129 is 921431132.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 135094129 + 96040000 = 11623^2 + 9800^2 .

It is a cyclic number.

It is not a de Polignac number, because 231134129 - 2⁸ = 231133873 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 231134098 and 231134107.

It is not a weakly prime, because it can be changed into another prime (231134119) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 115567064 + 115567065.

It is an arithmetic number, because the mean of its divisors is an integer number (115567065).

Almost surely, 2^231134129 is an apocalyptic number.

It is an amenable number.

231134129 is a deficient number, since it is larger than the sum of its proper divisors (1).

231134129 is an equidigital number, since it uses as much as digits as its factorization.

231134129 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1296, while the sum is 26.

The square root of 231134129 is about 15203.0960333743. The cubic root of 231134129 is about 613.6979782328.

The spelling of 231134129 in words is "two hundred thirty-one million, one hundred thirty-four thousand, one hundred twenty-nine".