243297140349 has 16 divisors (see below), whose sum is σ = 326919409344. Its totient is φ = 160936838400.

The previous prime is 243297140309. The next prime is 243297140363. The reversal of 243297140349 is 943041792342.

It is not a de Polignac number, because 243297140349 - 2⁷ = 243297140221 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 243297140298 and 243297140307.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (243297140309) 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, 2954437 + ... + 3035669.

It is an arithmetic number, because the mean of its divisors is an integer number (20432463084).

Almost surely, 2^243297140349 is an apocalyptic number.

It is an amenable number.

243297140349 is a deficient number, since it is larger than the sum of its proper divisors (83622268995).

243297140349 is a wasteful number, since it uses less digits than its factorization.

243297140349 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 88988.

The product of its (nonzero) digits is 1306368, while the sum is 48.

The spelling of 243297140349 in words is "two hundred forty-three billion, two hundred ninety-seven million, one hundred forty thousand, three hundred forty-nine".