13161911 has 16 divisors (see below), whose sum is σ = 16243200. Its totient is φ = 10415328.

The previous prime is 13161881. The next prime is 13161917. The reversal of 13161911 is 11916131.

It is not a de Polignac number, because 13161911 - 2⁶ = 13161847 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13161917) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3260 + ... + 6078.

It is an arithmetic number, because the mean of its divisors is an integer number (1015200).

Almost surely, 2^13161911 is an apocalyptic number.

13161911 is a deficient number, since it is larger than the sum of its proper divisors (3081289).

13161911 is a wasteful number, since it uses less digits than its factorization.

13161911 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2878.

The product of its digits is 162, while the sum is 23.

The square root of 13161911 is about 3627.9348119833. The cubic root of 13161911 is about 236.1056156117.

The spelling of 13161911 in words is "thirteen million, one hundred sixty-one thousand, nine hundred eleven".