243134266322731 has 48 divisors (see below), whose sum is σ = 297160998359040. Its totient is φ = 194824881377280.

The previous prime is 243134266322681. The next prime is 243134266322821. The reversal of 243134266322731 is 137223662431342.

It is not a de Polignac number, because 243134266322731 - 2²⁵ = 243134232768299 is a prime.

It is a super-2 number, since 2×243134266322731² (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 (243134246322731) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 259575000 + ... + 260509978.

It is an arithmetic number, because the mean of its divisors is an integer number (6190854132480).

Almost surely, 2^{243134266322731} is an apocalyptic number.

243134266322731 is a deficient number, since it is larger than the sum of its proper divisors (54026732036309).

243134266322731 is a wasteful number, since it uses less digits than its factorization.

243134266322731 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 935884 (or 935867 counting only the distinct ones).

The product of its digits is 5225472, while the sum is 49.

The spelling of 243134266322731 in words is "two hundred forty-three trillion, one hundred thirty-four billion, two hundred sixty-six million, three hundred twenty-two thousand, seven hundred thirty-one".