2840431 has 16 divisors (see below), whose sum is σ = 3294720. Its totient is φ = 2423520.

The previous prime is 2840419. The next prime is 2840447. The reversal of 2840431 is 1340482.

It is not a de Polignac number, because 2840431 - 2⁷ = 2840303 is a prime.

It is a super-2 number, since 2×2840431² = 16136096531522, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2840731) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 26005 + ... + 26113.

It is an arithmetic number, because the mean of its divisors is an integer number (205920).

2^2840431 is an apocalyptic number.

2840431 is a deficient number, since it is larger than the sum of its proper divisors (454289).

2840431 is a wasteful number, since it uses less digits than its factorization.

2840431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 246.

The product of its (nonzero) digits is 768, while the sum is 22.

The square root of 2840431 is about 1685.3578255077. The cubic root of 2840431 is about 141.6211384649.

The spelling of 2840431 in words is "two million, eight hundred forty thousand, four hundred thirty-one".