243961293 has 16 divisors (see below), whose sum is σ = 329215040. Its totient is φ = 160683264.

The previous prime is 243961261. The next prime is 243961301. The reversal of 243961293 is 392169342.

It is not a de Polignac number, because 243961293 - 2⁵ = 243961261 is a prime.

It is a super-2 number, since 2×243961293² = 119034224964463698, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (243961093) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 140730 + ... + 142452.

It is an arithmetic number, because the mean of its divisors is an integer number (20575940).

Almost surely, 2^243961293 is an apocalyptic number.

It is an amenable number.

243961293 is a deficient number, since it is larger than the sum of its proper divisors (85253747).

243961293 is a wasteful number, since it uses less digits than its factorization.

243961293 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2268.

The product of its digits is 69984, while the sum is 39.

The square root of 243961293 is about 15619.2603217950. The cubic root of 243961293 is about 624.8469325423.

The spelling of 243961293 in words is "two hundred forty-three million, nine hundred sixty-one thousand, two hundred ninety-three".