2931285 has 16 divisors (see below), whose sum is σ = 5360256. Its totient is φ = 1339968.

The previous prime is 2931241. The next prime is 2931289. The reversal of 2931285 is 5821392.

It is a happy number.

It is not a de Polignac number, because 2931285 - 2⁶ = 2931221 is a prime.

2931285 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2931289) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13854 + ... + 14063.

It is an arithmetic number, because the mean of its divisors is an integer number (335016).

2^2931285 is an apocalyptic number.

It is an amenable number.

2931285 is a deficient number, since it is larger than the sum of its proper divisors (2428971).

2931285 is a wasteful number, since it uses less digits than its factorization.

2931285 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27932.

The product of its digits is 4320, while the sum is 30.

The square root of 2931285 is about 1712.0995882249. The cubic root of 2931285 is about 143.1152835010.

The spelling of 2931285 in words is "two million, nine hundred thirty-one thousand, two hundred eighty-five".