243155324 has 6 divisors (see below), whose sum is σ = 425521824. Its totient is φ = 121577660.

The previous prime is 243155323. The next prime is 243155371. The reversal of 243155324 is 423551342.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (243155323) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30394412 + ... + 30394419.

It is an arithmetic number, because the mean of its divisors is an integer number (70920304).

Almost surely, 2^243155324 is an apocalyptic number.

It is an amenable number.

243155324 is a deficient number, since it is larger than the sum of its proper divisors (182366500).

243155324 is a wasteful number, since it uses less digits than its factorization.

243155324 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60788835 (or 60788833 counting only the distinct ones).

The product of its digits is 14400, while the sum is 29.

The square root of 243155324 is about 15593.4384918786. The cubic root of 243155324 is about 624.1580761855.

The spelling of 243155324 in words is "two hundred forty-three million, one hundred fifty-five thousand, three hundred twenty-four".