243892313 has 16 divisors (see below), whose sum is σ = 289578240. Its totient is φ = 201062400.

The previous prime is 243892309. The next prime is 243892351. The reversal of 243892313 is 313298342.

It is not a de Polignac number, because 243892313 - 2² = 243892309 is a prime.

It is not an unprimeable number, because it can be changed into a prime (243892393) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14393 + ... + 26361.

It is an arithmetic number, because the mean of its divisors is an integer number (18098640).

Almost surely, 2^243892313 is an apocalyptic number.

It is an amenable number.

243892313 is a deficient number, since it is larger than the sum of its proper divisors (45685927).

243892313 is a wasteful number, since it uses less digits than its factorization.

243892313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12088.

The product of its digits is 31104, while the sum is 35.

The square root of 243892313 is about 15617.0519945347. The cubic root of 243892313 is about 624.7880352149.

The spelling of 243892313 in words is "two hundred forty-three million, eight hundred ninety-two thousand, three hundred thirteen".