243412211240 has 64 divisors (see below), whose sum is σ = 598205736000. Its totient is φ = 88403991040.

The previous prime is 243412211221. The next prime is 243412211267. The reversal of 243412211240 is 42112214342.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14051 + ... + 697869.

It is an arithmetic number, because the mean of its divisors is an integer number (9346964625).

Almost surely, 2^243412211240 is an apocalyptic number.

243412211240 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 243412211240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (299102868000).

243412211240 is an abundant number, since it is smaller than the sum of its proper divisors (354793524760).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

243412211240 is a wasteful number, since it uses less digits than its factorization.

243412211240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 684650 (or 684646 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 26.

Adding to 243412211240 its reverse (42112214342), we get a palindrome (285524425582).

The spelling of 243412211240 in words is "two hundred forty-three billion, four hundred twelve million, two hundred eleven thousand, two hundred forty".