223032321137 has 2 divisors, whose sum is σ = 223032321138. Its totient is φ = 223032321136.

The previous prime is 223032321133. The next prime is 223032321163. The reversal of 223032321137 is 731123230322.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 175229308816 + 47803012321 = 418604^2 + 218639^2 .

It is a cyclic number.

It is not a de Polignac number, because 223032321137 - 2² = 223032321133 is a prime.

It is not a weakly prime, because it can be changed into another prime (223032321133) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 111516160568 + 111516160569.

It is an arithmetic number, because the mean of its divisors is an integer number (111516160569).

Almost surely, 2^223032321137 is an apocalyptic number.

It is an amenable number.

223032321137 is a deficient number, since it is larger than the sum of its proper divisors (1).

223032321137 is an equidigital number, since it uses as much as digits as its factorization.

223032321137 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9072, while the sum is 29.

Adding to 223032321137 its reverse (731123230322), we get a palindrome (954155551459).

The spelling of 223032321137 in words is "two hundred twenty-three billion, thirty-two million, three hundred twenty-one thousand, one hundred thirty-seven".