13107961 has 4 divisors (see below), whose sum is σ = 13116532. Its totient is φ = 13099392.

The previous prime is 13107959. The next prime is 13108001. The reversal of 13107961 is 16970131.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 16970131 = 17 ⋅998243.

It can be written as a sum of positive squares in 2 ways, for example, as 11799225 + 1308736 = 3435^2 + 1144^2 .

It is a cyclic number.

It is not a de Polignac number, because 13107961 - 2¹ = 13107959 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13107911) 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, 1296 + ... + 5281.

It is an arithmetic number, because the mean of its divisors is an integer number (3279133).

Almost surely, 2^13107961 is an apocalyptic number.

It is an amenable number.

13107961 is a deficient number, since it is larger than the sum of its proper divisors (8571).

13107961 is an equidigital number, since it uses as much as digits as its factorization.

13107961 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8570.

The product of its (nonzero) digits is 1134, while the sum is 28.

The square root of 13107961 is about 3620.4918174193. The cubic root of 13107961 is about 235.7825788910.

The spelling of 13107961 in words is "thirteen million, one hundred seven thousand, nine hundred sixty-one".