16131155 has 4 divisors (see below), whose sum is σ = 19357392. Its totient is φ = 12904920.

The previous prime is 16131127. The next prime is 16131169. The reversal of 16131155 is 55113161.

16131155 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 16131155 - 2⁶ = 16131091 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 16131155.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1613111 + ... + 1613120.

It is an arithmetic number, because the mean of its divisors is an integer number (4839348).

Almost surely, 2^16131155 is an apocalyptic number.

16131155 is a deficient number, since it is larger than the sum of its proper divisors (3226237).

16131155 is an equidigital number, since it uses as much as digits as its factorization.

16131155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3226236.

The product of its digits is 450, while the sum is 23.

The square root of 16131155 is about 4016.3609150573. The cubic root of 16131155 is about 252.6708577945.

The spelling of 16131155 in words is "sixteen million, one hundred thirty-one thousand, one hundred fifty-five".