20410431 has 8 divisors (see below), whose sum is σ = 28091904. Its totient is φ = 13167960.

The previous prime is 20410409. The next prime is 20410433. The reversal of 20410431 is 13401402.

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

It is not a de Polignac number, because 20410431 - 2⁷ = 20410303 is a prime.

It is a super-2 number, since 2×20410431² = 833171387211522, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 20410431.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20410433) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 109641 + ... + 109826.

It is an arithmetic number, because the mean of its divisors is an integer number (3511488).

Almost surely, 2^20410431 is an apocalyptic number.

20410431 is a deficient number, since it is larger than the sum of its proper divisors (7681473).

20410431 is a wasteful number, since it uses less digits than its factorization.

20410431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 219501.

The product of its (nonzero) digits is 96, while the sum is 15.

The square root of 20410431 is about 4517.7904997908. The cubic root of 20410431 is about 273.2860049259.

Adding to 20410431 its reverse (13401402), we get a palindrome (33811833).

The spelling of 20410431 in words is "twenty million, four hundred ten thousand, four hundred thirty-one".