13111977 has 8 divisors (see below), whose sum is σ = 18046720. Its totient is φ = 8459280.

The previous prime is 13111961. The next prime is 13112051. The reversal of 13111977 is 77911131.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 13111977 - 2⁴ = 13111961 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13111907) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 70402 + ... + 70587.

It is an arithmetic number, because the mean of its divisors is an integer number (2255840).

Almost surely, 2^13111977 is an apocalyptic number.

It is an amenable number.

13111977 is a deficient number, since it is larger than the sum of its proper divisors (4934743).

13111977 is a wasteful number, since it uses less digits than its factorization.

13111977 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 141023.

The product of its digits is 1323, while the sum is 30.

The square root of 13111977 is about 3621.0463957260. The cubic root of 13111977 is about 235.8066560187.

The spelling of 13111977 in words is "thirteen million, one hundred eleven thousand, nine hundred seventy-seven".