223131157 has 2 divisors, whose sum is σ = 223131158. Its totient is φ = 223131156.

The previous prime is 223131109. The next prime is 223131169. The reversal of 223131157 is 751131322.

It is a happy number.

223131157 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 189502756 + 33628401 = 13766^2 + 5799^2 .

It is a cyclic number.

It is not a de Polignac number, because 223131157 - 2¹⁵ = 223098389 is a prime.

It is a super-3 number, since 3×223131157³ (a number of 26 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (223131187) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 111565578 + 111565579.

It is an arithmetic number, because the mean of its divisors is an integer number (111565579).

Almost surely, 2^223131157 is an apocalyptic number.

It is an amenable number.

223131157 is a deficient number, since it is larger than the sum of its proper divisors (1).

223131157 is an equidigital number, since it uses as much as digits as its factorization.

223131157 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1260, while the sum is 25.

The square root of 223131157 is about 14937.5753387221. The cubic root of 223131157 is about 606.5315629525.

Adding to 223131157 its reverse (751131322), we get a palindrome (974262479).

The spelling of 223131157 in words is "two hundred twenty-three million, one hundred thirty-one thousand, one hundred fifty-seven".