2104431 has 16 divisors (see below), whose sum is σ = 3346944.
Its totient is φ = 1149984.
The previous prime is 2104423. The next prime is 2104433. The reversal of 2104431 is 1344012.
It is not a de Polignac number, because 2104431 - 23 = 2104423 is a prime.
It is a super-2 number, since 2×21044312 = 8857259667522, which contains 22 as substring.
It is an Ulam number.
2104431 is a lucky number.
It is a self number, because there is not a number n which added to its sum of digits gives 2104431.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (2104433) 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, 1696 + ... + 2661.
It is an arithmetic number, because the mean of its divisors is an integer number (209184).
22104431 is an apocalyptic number.
2104431 is a gapful number since it is divisible by the number (21) formed by its first and last digit.
2104431 is a deficient number, since it is larger than the sum of its proper divisors (1242513).
2104431 is a wasteful number, since it uses less digits than its factorization.
2104431 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 4390.
The product of its (nonzero) digits is 96, while the sum is 15.
The square root of 2104431 is about 1450.6657092521.
The cubic root of 2104431 is about 128.1479206268.
Adding to 2104431 its reverse (1344012), we get a palindrome (3448443).
The spelling of 2104431 in words is "two million, one hundred four thousand, four hundred thirty-one".