231322101137 has 2 divisors, whose sum is σ = 231322101138. Its totient is φ = 231322101136.

The previous prime is 231322101083. The next prime is 231322101163. The reversal of 231322101137 is 731101223132.

It is an a-pointer prime, because the next prime (231322101163) can be obtained adding 231322101137 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., 188585221696 + 42736879441 = 434264^2 + 206729^2 .

It is a cyclic number.

It is not a de Polignac number, because 231322101137 - 2¹⁴ = 231322084753 is a prime.

It is not a weakly prime, because it can be changed into another prime (231322101167) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 115661050568 + 115661050569.

It is an arithmetic number, because the mean of its divisors is an integer number (115661050569).

Almost surely, 2^231322101137 is an apocalyptic number.

It is an amenable number.

231322101137 is a deficient number, since it is larger than the sum of its proper divisors (1).

231322101137 is an equidigital number, since it uses as much as digits as its factorization.

231322101137 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1512, while the sum is 26.

Adding to 231322101137 its reverse (731101223132), we get a palindrome (962423324269).

The spelling of 231322101137 in words is "two hundred thirty-one billion, three hundred twenty-two million, one hundred one thousand, one hundred thirty-seven".