243213001340 has 48 divisors (see below), whose sum is σ = 520797483360. Its totient is φ = 95379728640.

The previous prime is 243213001331. The next prime is 243213001349. The reversal of 243213001340 is 43100312342.

It is an interprime number because it is at equal distance from previous prime (243213001331) and next prime (243213001349).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (243213001349) 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, 163850 + ... + 716430.

It is an arithmetic number, because the mean of its divisors is an integer number (10849947570).

Almost surely, 2^243213001340 is an apocalyptic number.

243213001340 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

243213001340 is an abundant number, since it is smaller than the sum of its proper divisors (277584482020).

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

243213001340 is a wasteful number, since it uses less digits than its factorization.

243213001340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 553022 (or 553020 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 23.

Adding to 243213001340 its reverse (43100312342), we get a palindrome (286313313682).

The spelling of 243213001340 in words is "two hundred forty-three billion, two hundred thirteen million, one thousand, three hundred forty".