231048161 has 4 divisors (see below), whose sum is σ = 236683524. Its totient is φ = 225412800.

The previous prime is 231048143. The next prime is 231048217. The reversal of 231048161 is 161840132.

231048161 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 76667536 + 154380625 = 8756^2 + 12425^2 .

It is a cyclic number.

It is not a de Polignac number, because 231048161 - 2¹⁰ = 231047137 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 231048161.

It is not an unprimeable number, because it can be changed into a prime (231045161) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2817620 + ... + 2817701.

It is an arithmetic number, because the mean of its divisors is an integer number (59170881).

Almost surely, 2^231048161 is an apocalyptic number.

It is an amenable number.

231048161 is a deficient number, since it is larger than the sum of its proper divisors (5635363).

231048161 is an equidigital number, since it uses as much as digits as its factorization.

231048161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5635362.

The product of its (nonzero) digits is 1152, while the sum is 26.

The square root of 231048161 is about 15200.2684515768. The cubic root of 231048161 is about 613.6218825471.

Adding to 231048161 its reverse (161840132), we get a palindrome (392888293).

The spelling of 231048161 in words is "two hundred thirty-one million, forty-eight thousand, one hundred sixty-one".