13717297531 has 4 divisors (see below), whose sum is σ = 15676911472. Its totient is φ = 11757683592.

The previous prime is 13717297523. The next prime is 13717297549. The reversal of 13717297531 is 13579271731.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 13579271731 = 43 ⋅315797017.

It is a cyclic number.

It is not a de Polignac number, because 13717297531 - 2³ = 13717297523 is a prime.

It is a super-2 number, since 2×13717297531² (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 (13717297031) 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, 979806960 + ... + 979806973.

It is an arithmetic number, because the mean of its divisors is an integer number (3919227868).

Almost surely, 2^13717297531 is an apocalyptic number.

13717297531 is a deficient number, since it is larger than the sum of its proper divisors (1959613941).

13717297531 is an equidigital number, since it uses as much as digits as its factorization.

13717297531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1959613940.

The product of its digits is 277830, while the sum is 46.

The spelling of 13717297531 in words is "thirteen billion, seven hundred seventeen million, two hundred ninety-seven thousand, five hundred thirty-one".