13706260731 has 12 divisors (see below), whose sum is σ = 19908537480. Its totient is φ = 9086458560.

The previous prime is 13706260721. The next prime is 13706260747.

13706260731 is a `hidden beast` number, since 13 + 7 + 0 + 6 + 2 + 607 + 31 = 666.

13706260731 is nontrivially palindromic in base 10.

It is a de Polignac number, because none of the positive numbers 2^k-13706260731 is a prime.

It is a super-2 number, since 2×13706260731² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (13706260721) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4252350 + ... + 4255571.

It is an arithmetic number, because the mean of its divisors is an integer number (1659044790).

Almost surely, 2^13706260731 is an apocalyptic number.

13706260731 is a deficient number, since it is larger than the sum of its proper divisors (6202276749).

13706260731 is a wasteful number, since it uses less digits than its factorization.

13706260731 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8508106 (or 8508103 counting only the distinct ones).

The product of its (nonzero) digits is 31752, while the sum is 36.

The spelling of 13706260731 in words is "thirteen billion, seven hundred six million, two hundred sixty thousand, seven hundred thirty-one".