2140831 has 8 divisors (see below), whose sum is σ = 2669184. Its totient is φ = 1668120.

The previous prime is 2140823. The next prime is 2140843. The reversal of 2140831 is 1380412.

2140831 = T₄₄₁ + T₄₄₂ + ... + T₄₆₁.

2140831 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 2140831 - 2³ = 2140823 is a prime.

It is a super-2 number, since 2×2140831² = 9166314741122, which contains 22 as substring.

It is an Ulam number.

It is a junction number, because it is equal to n+sod(n) for n = 2140799 and 2140808.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2140811) 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 7 ways as a sum of consecutive naturals, for example, 13825 + ... + 13978.

It is an arithmetic number, because the mean of its divisors is an integer number (333648).

2^2140831 is an apocalyptic number.

2140831 is a deficient number, since it is larger than the sum of its proper divisors (528353).

2140831 is a wasteful number, since it uses less digits than its factorization.

2140831 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27821.

The product of its (nonzero) digits is 192, while the sum is 19.

The square root of 2140831 is about 1463.1578862173. The cubic root of 2140831 is about 128.8825523980.

The spelling of 2140831 in words is "two million, one hundred forty thousand, eight hundred thirty-one".