231134161 has 2 divisors, whose sum is σ = 231134162. Its totient is φ = 231134160.

The previous prime is 231134149. The next prime is 231134243. The reversal of 231134161 is 161431132.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 226803600 + 4330561 = 15060^2 + 2081^2 .

It is a cyclic number.

It is not a de Polignac number, because 231134161 - 2⁵ = 231134129 is a prime.

It is not a weakly prime, because it can be changed into another prime (231138161) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 115567080 + 115567081.

It is an arithmetic number, because the mean of its divisors is an integer number (115567081).

Almost surely, 2^231134161 is an apocalyptic number.

It is an amenable number.

231134161 is a deficient number, since it is larger than the sum of its proper divisors (1).

231134161 is an equidigital number, since it uses as much as digits as its factorization.

231134161 is an evil number, because the sum of its binary digits is even.

The product of its digits is 432, while the sum is 22.

The square root of 231134161 is about 15203.0970857914. The cubic root of 231134161 is about 613.6980065545.

Adding to 231134161 its reverse (161431132), we get a palindrome (392565293).

The spelling of 231134161 in words is "two hundred thirty-one million, one hundred thirty-four thousand, one hundred sixty-one".