243297140347 has 16 divisors (see below), whose sum is σ = 266693807232. Its totient is φ = 221043409920.

The previous prime is 243297140309. The next prime is 243297140363. The reversal of 243297140347 is 743041792342.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-243297140347 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 243297140297 and 243297140306.

It is not an unprimeable number, because it can be changed into a prime (243297140447) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2027304 + ... + 2143957.

It is an arithmetic number, because the mean of its divisors is an integer number (16668362952).

Almost surely, 2^243297140347 is an apocalyptic number.

243297140347 is a deficient number, since it is larger than the sum of its proper divisors (23396666885).

243297140347 is a wasteful number, since it uses less digits than its factorization.

243297140347 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4171398.

The product of its (nonzero) digits is 1016064, while the sum is 46.

The spelling of 243297140347 in words is "two hundred forty-three billion, two hundred ninety-seven million, one hundred forty thousand, three hundred forty-seven".