2861131 has 16 divisors (see below), whose sum is σ = 3677184. Its totient is φ = 2163744.

The previous prime is 2861129. The next prime is 2861137. The reversal of 2861131 is 1311682.

2861131 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 2861131 - 2¹ = 2861129 is a prime.

It is a super-3 number, since 3×2861131³ = 70264261078344333273, which contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2861137) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1410 + ... + 2776.

It is an arithmetic number, because the mean of its divisors is an integer number (229824).

2^2861131 is an apocalyptic number.

2861131 is a deficient number, since it is larger than the sum of its proper divisors (816053).

2861131 is a wasteful number, since it uses less digits than its factorization.

2861131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1410.

The product of its digits is 288, while the sum is 22.

The square root of 2861131 is about 1691.4878066365. The cubic root of 2861131 is about 141.9643334347.

It can be divided in two parts, 2861 and 131, that added together give a palindrome (2992).

The spelling of 2861131 in words is "two million, eight hundred sixty-one thousand, one hundred thirty-one".