231311153 has 2 divisors, whose sum is σ = 231311154. Its totient is φ = 231311152.

The previous prime is 231311107. The next prime is 231311159. The reversal of 231311153 is 351113132.

231311153 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 231283264 + 27889 = 15208^2 + 167^2 .

It is a cyclic number.

It is not a de Polignac number, because 231311153 - 2¹² = 231307057 is a prime.

It is a Chen prime.

It is a nialpdrome in base 16.

It is not a weakly prime, because it can be changed into another prime (231311159) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 115655576 + 115655577.

It is an arithmetic number, because the mean of its divisors is an integer number (115655577).

Almost surely, 2^231311153 is an apocalyptic number.

It is an amenable number.

231311153 is a deficient number, since it is larger than the sum of its proper divisors (1).

231311153 is an equidigital number, since it uses as much as digits as its factorization.

231311153 is an evil number, because the sum of its binary digits is even.

The product of its digits is 270, while the sum is 20.

The square root of 231311153 is about 15208.9168910873. The cubic root of 231311153 is about 613.8546139026.

Adding to 231311153 its reverse (351113132), we get a palindrome (582424285).

The spelling of 231311153 in words is "two hundred thirty-one million, three hundred eleven thousand, one hundred fifty-three".