3131089 has 4 divisors (see below), whose sum is σ = 3371956. Its totient is φ = 2890224.

The previous prime is 3131087. The next prime is 3131099. The reversal of 3131089 is 9801313.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9801313 = 2063 ⋅4751.

It can be written as a sum of positive squares in 2 ways, for example, as 258064 + 2873025 = 508^2 + 1695^2 .

It is a cyclic number.

It is not a de Polignac number, because 3131089 - 2¹ = 3131087 is a prime.

It is a Duffinian number.

3131089 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3131087) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 120414 + ... + 120439.

It is an arithmetic number, because the mean of its divisors is an integer number (842989).

Almost surely, 2^3131089 is an apocalyptic number.

It is an amenable number.

3131089 is a deficient number, since it is larger than the sum of its proper divisors (240867).

3131089 is a wasteful number, since it uses less digits than its factorization.

3131089 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 240866.

The product of its (nonzero) digits is 648, while the sum is 25.

The square root of 3131089 is about 1769.4883441266. The cubic root of 3131089 is about 146.2957818051.

The spelling of 3131089 in words is "three million, one hundred thirty-one thousand, eighty-nine".