231232211153 has 2 divisors, whose sum is σ = 231232211154. Its totient is φ = 231232211152.

The previous prime is 231232211123. The next prime is 231232211179. The reversal of 231232211153 is 351112232132.

It is an a-pointer prime, because the next prime (231232211179) can be obtained adding 231232211153 to its sum of digits (26).

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 231118639504 + 113571649 = 480748^2 + 10657^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-231232211153 is a prime.

It is not a weakly prime, because it can be changed into another prime (231232211123) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 115616105576 + 115616105577.

It is an arithmetic number, because the mean of its divisors is an integer number (115616105577).

Almost surely, 2^231232211153 is an apocalyptic number.

It is an amenable number.

231232211153 is a deficient number, since it is larger than the sum of its proper divisors (1).

231232211153 is an equidigital number, since it uses as much as digits as its factorization.

231232211153 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2160, while the sum is 26.

Adding to 231232211153 its reverse (351112232132), we get a palindrome (582344443285).

The spelling of 231232211153 in words is "two hundred thirty-one billion, two hundred thirty-two million, two hundred eleven thousand, one hundred fifty-three".