2931057 has 6 divisors (see below), whose sum is σ = 4233762. Its totient is φ = 1954032.

The previous prime is 2931053. The next prime is 2931067. The reversal of 2931057 is 7501392.

It can be written as a sum of positive squares in only one way, i.e., 1962801 + 968256 = 1401^2 + 984^2 .

It is not a de Polignac number, because 2931057 - 2² = 2931053 is a prime.

2931057 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 2931057.

It is not an unprimeable number, because it can be changed into a prime (2931053) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 162828 + ... + 162845.

It is an arithmetic number, because the mean of its divisors is an integer number (705627).

2^2931057 is an apocalyptic number.

It is an amenable number.

2931057 is a deficient number, since it is larger than the sum of its proper divisors (1302705).

2931057 is a wasteful number, since it uses less digits than its factorization.

2931057 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 325679 (or 325676 counting only the distinct ones).

The product of its (nonzero) digits is 1890, while the sum is 27.

The square root of 2931057 is about 1712.0330020184. The cubic root of 2931057 is about 143.1115728268. Note that the first 3 decimals are identical.

The spelling of 2931057 in words is "two million, nine hundred thirty-one thousand, fifty-seven".