243402312111 has 16 divisors (see below), whose sum is σ = 371386169088. Its totient is φ = 138904257600.

The previous prime is 243402312089. The next prime is 243402312149. The reversal of 243402312111 is 111213204342.

It is not a de Polignac number, because 243402312111 - 2⁹ = 243402311599 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (243402312211) 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, 7599385 + ... + 7631346.

It is an arithmetic number, because the mean of its divisors is an integer number (23211635568).

Almost surely, 2^243402312111 is an apocalyptic number.

243402312111 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

243402312111 is a deficient number, since it is larger than the sum of its proper divisors (127983856977).

243402312111 is a wasteful number, since it uses less digits than its factorization.

243402312111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15231502.

The product of its (nonzero) digits is 1152, while the sum is 24.

Adding to 243402312111 its reverse (111213204342), we get a palindrome (354615516453).

The spelling of 243402312111 in words is "two hundred forty-three billion, four hundred two million, three hundred twelve thousand, one hundred eleven".