2195431 has 16 divisors (see below), whose sum is σ = 2799360. Its totient is φ = 1676160.

The previous prime is 2195411. The next prime is 2195441. The reversal of 2195431 is 1345912.

It is a cyclic number.

It is not a de Polignac number, because 2195431 - 2⁵ = 2195399 is a prime.

It is a super-2 number, since 2×2195431² = 9639834551522, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2195396 and 2195405.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2195411) 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, 1776 + ... + 2746.

It is an arithmetic number, because the mean of its divisors is an integer number (174960).

2^2195431 is an apocalyptic number.

2195431 is a deficient number, since it is larger than the sum of its proper divisors (603929).

2195431 is a wasteful number, since it uses less digits than its factorization.

2195431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1014.

The product of its digits is 1080, while the sum is 25.

The square root of 2195431 is about 1481.6986873180. The cubic root of 2195431 is about 129.9690458846.

The spelling of 2195431 in words is "two million, one hundred ninety-five thousand, four hundred thirty-one".