13724042731 has 8 divisors (see below), whose sum is σ = 15685498080. Its totient is φ = 11762806848.

The previous prime is 13724042729. The next prime is 13724042797.

13724042731 is nontrivially palindromic in base 10.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 13724042731 - 2¹ = 13724042729 is a prime.

It is a super-2 number, since 2×13724042731² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (13724042231) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 113655 + ... + 200911.

It is an arithmetic number, because the mean of its divisors is an integer number (1960687260).

Almost surely, 2^13724042731 is an apocalyptic number.

13724042731 is a deficient number, since it is larger than the sum of its proper divisors (1961455349).

13724042731 is an equidigital number, since it uses as much as digits as its factorization.

13724042731 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 109733.

The product of its (nonzero) digits is 28224, while the sum is 34.

It can be divided in two parts, 137240 and 42731, that added together give a palindrome (179971).

The spelling of 13724042731 in words is "thirteen billion, seven hundred twenty-four million, forty-two thousand, seven hundred thirty-one".