223243157 has 2 divisors, whose sum is σ = 223243158. Its totient is φ = 223243156.

The previous prime is 223243147. The next prime is 223243171. The reversal of 223243157 is 751342322.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 204804721 + 18438436 = 14311^2 + 4294^2 .

It is a cyclic number.

It is not a de Polignac number, because 223243157 - 2¹⁰ = 223242133 is a prime.

It is a super-3 number, since 3×223243157³ (a number of 26 digits) contains 333 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (223243117) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 111621578 + 111621579.

It is an arithmetic number, because the mean of its divisors is an integer number (111621579).

Almost surely, 2^223243157 is an apocalyptic number.

It is an amenable number.

223243157 is a deficient number, since it is larger than the sum of its proper divisors (1).

223243157 is an equidigital number, since it uses as much as digits as its factorization.

223243157 is an evil number, because the sum of its binary digits is even.

The product of its digits is 10080, while the sum is 29.

The square root of 223243157 is about 14941.3238034653. The cubic root of 223243157 is about 606.6330281970.

Adding to 223243157 its reverse (751342322), we get a palindrome (974585479).

The spelling of 223243157 in words is "two hundred twenty-three million, two hundred forty-three thousand, one hundred fifty-seven".