243369231 has 12 divisors (see below), whose sum is σ = 377470872. Its totient is φ = 139068048.

The previous prime is 243369227. The next prime is 243369241. The reversal of 243369231 is 132963342.

It is not a de Polignac number, because 243369231 - 2² = 243369227 is a prime.

It is a super-2 number, since 2×243369231² = 118457165195062722, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 243369192 and 243369201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (243369221) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 827640 + ... + 827933.

It is an arithmetic number, because the mean of its divisors is an integer number (31455906).

Almost surely, 2^243369231 is an apocalyptic number.

243369231 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

243369231 is a deficient number, since it is larger than the sum of its proper divisors (134101641).

243369231 is a wasteful number, since it uses less digits than its factorization.

243369231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1655590 (or 1655583 counting only the distinct ones).

The product of its digits is 23328, while the sum is 33.

The square root of 243369231 is about 15600.2958625790. The cubic root of 243369231 is about 624.3410492852.

The spelling of 243369231 in words is "two hundred forty-three million, three hundred sixty-nine thousand, two hundred thirty-one".