243783151 has 2 divisors, whose sum is σ = 243783152. Its totient is φ = 243783150.

The previous prime is 243783139. The next prime is 243783157. The reversal of 243783151 is 151387342.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 243783151 - 2⁵ = 243783119 is a prime.

It is a super-2 number, since 2×243783151² = 118860449422977602, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (243783157) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 121891575 + 121891576.

It is an arithmetic number, because the mean of its divisors is an integer number (121891576).

Almost surely, 2^243783151 is an apocalyptic number.

243783151 is a deficient number, since it is larger than the sum of its proper divisors (1).

243783151 is an equidigital number, since it uses as much as digits as its factorization.

243783151 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 20160, while the sum is 34.

The square root of 243783151 is about 15613.5566415855. The cubic root of 243783151 is about 624.6948065154.

The spelling of 243783151 in words is "two hundred forty-three million, seven hundred eighty-three thousand, one hundred fifty-one".