243153431 has 8 divisors (see below), whose sum is σ = 271007280. Its totient is φ = 216805248.

The previous prime is 243153413. The next prime is 243153461. The reversal of 243153431 is 134351342.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-243153431 is a prime.

It is a super-2 number, since 2×243153431² = 118247182014143522, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 243153431.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (243153461) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 376076 + ... + 376721.

It is an arithmetic number, because the mean of its divisors is an integer number (33875910).

Almost surely, 2^243153431 is an apocalyptic number.

243153431 is a deficient number, since it is larger than the sum of its proper divisors (27853849).

243153431 is a wasteful number, since it uses less digits than its factorization.

243153431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 752833.

The product of its digits is 4320, while the sum is 26.

The square root of 243153431 is about 15593.3777931531. The cubic root of 243153431 is about 624.1564564604.

The spelling of 243153431 in words is "two hundred forty-three million, one hundred fifty-three thousand, four hundred thirty-one".