2722131 has 6 divisors (see below), whose sum is σ = 3931980. Its totient is φ = 1814748.

The previous prime is 2722117. The next prime is 2722147. The reversal of 2722131 is 1312272.

It is not a de Polignac number, because 2722131 - 2⁶ = 2722067 is a prime.

It is a super-2 number, since 2×2722131² = 14819994362322, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2722231) 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, 151221 + ... + 151238.

It is an arithmetic number, because the mean of its divisors is an integer number (655330).

2^2722131 is an apocalyptic number.

2722131 is a deficient number, since it is larger than the sum of its proper divisors (1209849).

2722131 is a wasteful number, since it uses less digits than its factorization.

2722131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 302465 (or 302462 counting only the distinct ones).

The product of its digits is 168, while the sum is 18.

The square root of 2722131 is about 1649.8881780290. Note that the first 3 decimals coincide. The cubic root of 2722131 is about 139.6270857918.

The spelling of 2722131 in words is "two million, seven hundred twenty-two thousand, one hundred thirty-one".