12743722931 has 4 divisors (see below), whose sum is σ = 12918294552. Its totient is φ = 12569151312.

The previous prime is 12743722919. The next prime is 12743722933. The reversal of 12743722931 is 13922734721.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12743722931 is a prime.

It is a super-2 number, since 2×12743722931² (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 (12743722933) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 87285701 + ... + 87285846.

It is an arithmetic number, because the mean of its divisors is an integer number (3229573638).

Almost surely, 2^12743722931 is an apocalyptic number.

12743722931 is a deficient number, since it is larger than the sum of its proper divisors (174571621).

12743722931 is an equidigital number, since it uses as much as digits as its factorization.

12743722931 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 174571620.

The product of its digits is 127008, while the sum is 41.

The spelling of 12743722931 in words is "twelve billion, seven hundred forty-three million, seven hundred twenty-two thousand, nine hundred thirty-one".