3100881 has 8 divisors (see below), whose sum is σ = 4725184. Its totient is φ = 1771920.

The previous prime is 3100873. The next prime is 3100913. The reversal of 3100881 is 1880013.

It is a happy number.

3100881 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 3100881 - 2³ = 3100873 is a prime.

It is a super-2 number, since 2×3100881² = 19230925952322, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21), and also a Moran number because the ratio is a prime number: 147661 = 3100881 / (3 + 1 + 0 + 0 + 8 + 8 + 1).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3100861) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 73810 + ... + 73851.

It is an arithmetic number, because the mean of its divisors is an integer number (590648).

Almost surely, 2^3100881 is an apocalyptic number.

It is an amenable number.

3100881 is a deficient number, since it is larger than the sum of its proper divisors (1624303).

3100881 is a wasteful number, since it uses less digits than its factorization.

3100881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 147671.

The product of its (nonzero) digits is 192, while the sum is 21.

The square root of 3100881 is about 1760.9318555810. The cubic root of 3100881 is about 145.8237850256.

Adding to 3100881 its reverse (1880013), we get a palindrome (4980894).

The spelling of 3100881 in words is "three million, one hundred thousand, eight hundred eighty-one".