2931085 has 8 divisors (see below), whose sum is σ = 3532536. Its totient is φ = 2334720.

The previous prime is 2931083. The next prime is 2931101. The reversal of 2931085 is 5801392.

It can be written as a sum of positive squares in 4 ways, for example, as 1225449 + 1705636 = 1107^2 + 1306^2 .

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

It is not a de Polignac number, because 2931085 - 2¹ = 2931083 is a prime.

It is a Duffinian number.

2931085 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2931083) 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, 145 + ... + 2425.

It is an arithmetic number, because the mean of its divisors is an integer number (441567).

2^2931085 is an apocalyptic number.

It is an amenable number.

2931085 is a deficient number, since it is larger than the sum of its proper divisors (601451).

2931085 is a wasteful number, since it uses less digits than its factorization.

2931085 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2543.

The product of its (nonzero) digits is 2160, while the sum is 28.

The square root of 2931085 is about 1712.0411794113. The cubic root of 2931085 is about 143.1120285340.

It can be divided in two parts, 293 and 1085, that added together give a triangular number (1378 = T₅₂).

The spelling of 2931085 in words is "two million, nine hundred thirty-one thousand, eighty-five".