2731156 has 6 divisors (see below), whose sum is σ = 4779530. Its totient is φ = 1365576.

The previous prime is 2731147. The next prime is 2731159. The reversal of 2731156 is 6511372.

It can be written as a sum of positive squares in only one way, i.e., 2464900 + 266256 = 1570^2 + 516^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 2731156.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2731159) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 341391 + ... + 341398.

2^2731156 is an apocalyptic number.

It is an amenable number.

2731156 is a deficient number, since it is larger than the sum of its proper divisors (2048374).

2731156 is a wasteful number, since it uses less digits than its factorization.

2731156 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 682793 (or 682791 counting only the distinct ones).

The product of its digits is 1260, while the sum is 25.

The square root of 2731156 is about 1652.6209486752. The cubic root of 2731156 is about 139.7812229224.

The spelling of 2731156 in words is "two million, seven hundred thirty-one thousand, one hundred fifty-six".