13771431307 has 4 divisors (see below), whose sum is σ = 13771687720. Its totient is φ = 13771174896.

The previous prime is 13771431301. The next prime is 13771431313. The reversal of 13771431307 is 70313417731.

It is a happy number.

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

It is an interprime number because it is at equal distance from previous prime (13771431301) and next prime (13771431313).

It is a cyclic number.

It is not a de Polignac number, because 13771431307 - 2³ = 13771431299 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13771431301) 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, 13338 + ... + 166495.

It is an arithmetic number, because the mean of its divisors is an integer number (3442921930).

Almost surely, 2^13771431307 is an apocalyptic number.

13771431307 is a deficient number, since it is larger than the sum of its proper divisors (256413).

13771431307 is an equidigital number, since it uses as much as digits as its factorization.

13771431307 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 256412.

The product of its (nonzero) digits is 37044, while the sum is 37.

The spelling of 13771431307 in words is "thirteen billion, seven hundred seventy-one million, four hundred thirty-one thousand, three hundred seven".