243436157 has 2 divisors, whose sum is σ = 243436158. Its totient is φ = 243436156.

The previous prime is 243436153. The next prime is 243436169. The reversal of 243436157 is 751634342.

243436157 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 218625796 + 24810361 = 14786^2 + 4981^2 .

It is a cyclic number.

It is not a de Polignac number, because 243436157 - 2² = 243436153 is a prime.

It is a super-2 number, since 2×243436157² = 118522325069857298, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (243436153) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 121718078 + 121718079.

It is an arithmetic number, because the mean of its divisors is an integer number (121718079).

Almost surely, 2^243436157 is an apocalyptic number.

It is an amenable number.

243436157 is a deficient number, since it is larger than the sum of its proper divisors (1).

243436157 is an equidigital number, since it uses as much as digits as its factorization.

243436157 is an evil number, because the sum of its binary digits is even.

The product of its digits is 60480, while the sum is 35.

The square root of 243436157 is about 15602.4407385511. The cubic root of 243436157 is about 624.3982748422.

The spelling of 243436157 in words is "two hundred forty-three million, four hundred thirty-six thousand, one hundred fifty-seven".