2831997 has 8 divisors (see below), whose sum is σ = 4315456. Its totient is φ = 1618272.

The previous prime is 2831971. The next prime is 2831999. The reversal of 2831997 is 7991382.

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

It is not a de Polignac number, because 2831997 - 2¹⁰ = 2830973 is a prime.

It is a Duffinian number.

2831997 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2831999) 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, 67408 + ... + 67449.

It is an arithmetic number, because the mean of its divisors is an integer number (539432).

2^2831997 is an apocalyptic number.

It is an amenable number.

2831997 is a deficient number, since it is larger than the sum of its proper divisors (1483459).

2831997 is a wasteful number, since it uses less digits than its factorization.

2831997 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 134867.

The product of its digits is 27216, while the sum is 39.

The square root of 2831997 is about 1682.8538260942. The cubic root of 2831997 is about 141.4808291441.

It can be divided in two parts, 2831 and 997, that added together give a triangular number (3828 = T₈₇).

The spelling of 2831997 in words is "two million, eight hundred thirty-one thousand, nine hundred ninety-seven".