12310543731 has 4 divisors (see below), whose sum is σ = 16414058312. Its totient is φ = 8207029152.

The previous prime is 12310543723. The next prime is 12310543733. The reversal of 12310543731 is 13734501321.

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

It is not a de Polignac number, because 12310543731 - 2³ = 12310543723 is a prime.

It is a super-2 number, since 2×12310543731² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12310543733) 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 3 ways as a sum of consecutive naturals, for example, 2051757286 + ... + 2051757291.

It is an arithmetic number, because the mean of its divisors is an integer number (4103514578).

Almost surely, 2^12310543731 is an apocalyptic number.

12310543731 is a deficient number, since it is larger than the sum of its proper divisors (4103514581).

12310543731 is an equidigital number, since it uses as much as digits as its factorization.

12310543731 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4103514580.

The product of its (nonzero) digits is 7560, while the sum is 30.

The spelling of 12310543731 in words is "twelve billion, three hundred ten million, five hundred forty-three thousand, seven hundred thirty-one".