243103364151731 has 4 divisors (see below), whose sum is σ = 243208649283600. Its totient is φ = 242998079019864.

The previous prime is 243103364151727. The next prime is 243103364151733. The reversal of 243103364151731 is 137151463301342.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 243103364151731 - 2² = 243103364151727 is a prime.

It is a super-2 number, since 2×243103364151731² (a number of 30 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (243103364151733) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 52642562471 + ... + 52642567088.

It is an arithmetic number, because the mean of its divisors is an integer number (60802162320900).

Almost surely, 2^{243103364151731} is an apocalyptic number.

243103364151731 is a deficient number, since it is larger than the sum of its proper divisors (105285131869).

243103364151731 is a wasteful number, since it uses less digits than its factorization.

243103364151731 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 105285131868.

The product of its (nonzero) digits is 544320, while the sum is 44.

The spelling of 243103364151731 in words is "two hundred forty-three trillion, one hundred three billion, three hundred sixty-four million, one hundred fifty-one thousand, seven hundred thirty-one".