13707131 has 4 divisors (see below), whose sum is σ = 14077632. Its totient is φ = 13336632.

The previous prime is 13707121. The next prime is 13707139. The reversal of 13707131 is 13170731.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 13170731 = 7 ⋅1881533.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13707131 is a prime.

It is a super-2 number, since 2×13707131² = 375770880502322, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 13707097 and 13707106.

It is not an unprimeable number, because it can be changed into a prime (13707139) 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, 185195 + ... + 185268.

It is an arithmetic number, because the mean of its divisors is an integer number (3519408).

Almost surely, 2^13707131 is an apocalyptic number.

13707131 is a deficient number, since it is larger than the sum of its proper divisors (370501).

13707131 is an equidigital number, since it uses as much as digits as its factorization.

13707131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 370500.

The product of its (nonzero) digits is 441, while the sum is 23.

The square root of 13707131 is about 3702.3142762332. The cubic root of 13707131 is about 239.3217598671.

Adding to 13707131 its reverse (13170731), we get a palindrome (26877862).

The spelling of 13707131 in words is "thirteen million, seven hundred seven thousand, one hundred thirty-one".