243155029 has 8 divisors (see below), whose sum is σ = 277263000. Its totient is φ = 211247616.

The previous prime is 243154997. The next prime is 243155071. The reversal of 243155029 is 920551342.

243155029 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 39664804 + 203490225 = 6298^2 + 14265^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 243155029 - 2⁵ = 243154997 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (243155929) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 549904 + ... + 550345.

It is an arithmetic number, because the mean of its divisors is an integer number (34657875).

Almost surely, 2^243155029 is an apocalyptic number.

It is an amenable number.

243155029 is a deficient number, since it is larger than the sum of its proper divisors (34107971).

243155029 is a wasteful number, since it uses less digits than its factorization.

243155029 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1100279.

The product of its (nonzero) digits is 10800, while the sum is 31.

The square root of 243155029 is about 15593.4290327689. The cubic root of 243155029 is about 624.1578237724.

The spelling of 243155029 in words is "two hundred forty-three million, one hundred fifty-five thousand, twenty-nine".