231323131201 has 2 divisors, whose sum is σ = 231323131202. Its totient is φ = 231323131200.

The previous prime is 231323131157. The next prime is 231323131223. The reversal of 231323131201 is 102131323132.

It is an a-pointer prime, because the next prime (231323131223) can be obtained adding 231323131201 to its sum of digits (22).

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 162267174976 + 69055956225 = 402824^2 + 262785^2 .

It is a cyclic number.

It is not a de Polignac number, because 231323131201 - 2²⁵ = 231289576769 is a prime.

It is not a weakly prime, because it can be changed into another prime (231323131001) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 115661565600 + 115661565601.

It is an arithmetic number, because the mean of its divisors is an integer number (115661565601).

Almost surely, 2^231323131201 is an apocalyptic number.

It is an amenable number.

231323131201 is a deficient number, since it is larger than the sum of its proper divisors (1).

231323131201 is an equidigital number, since it uses as much as digits as its factorization.

231323131201 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 648, while the sum is 22.

Adding to 231323131201 its reverse (102131323132), we get a palindrome (333454454333).

It can be divided in two parts, 2313231 and 31201, that added together give a palindrome (2344432).

The spelling of 231323131201 in words is "two hundred thirty-one billion, three hundred twenty-three million, one hundred thirty-one thousand, two hundred one".