1232321137 has 2 divisors, whose sum is σ = 1232321138. Its totient is φ = 1232321136.

The previous prime is 1232321119. The next prime is 1232321173. The reversal of 1232321137 is 7311232321.

It is a happy number.

Together with next prime (1232321173) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1230536241 + 1784896 = 35079^2 + 1336^2 .

It is a cyclic number.

It is not a de Polignac number, because 1232321137 - 2²³ = 1223932529 is a prime.

It is not a weakly prime, because it can be changed into another prime (1232321107) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 616160568 + 616160569.

It is an arithmetic number, because the mean of its divisors is an integer number (616160569).

Almost surely, 2^1232321137 is an apocalyptic number.

It is an amenable number.

1232321137 is a deficient number, since it is larger than the sum of its proper divisors (1).

1232321137 is an equidigital number, since it uses as much as digits as its factorization.

1232321137 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1512, while the sum is 25.

The square root of 1232321137 is about 35104.4318712040. The cubic root of 1232321137 is about 1072.1148196170.

Adding to 1232321137 its reverse (7311232321), we get a palindrome (8543553458).

The spelling of 1232321137 in words is "one billion, two hundred thirty-two million, three hundred twenty-one thousand, one hundred thirty-seven".