20410231 has 4 divisors (see below), whose sum is σ = 20451312. Its totient is φ = 20369152.

The previous prime is 20410213. The next prime is 20410259. The reversal of 20410231 is 13201402.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 20410231 - 2¹⁷ = 20279159 is a prime.

It is a super-2 number, since 2×20410231² = 833155058946722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20410031) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19786 + ... + 20791.

It is an arithmetic number, because the mean of its divisors is an integer number (5112828).

Almost surely, 2^20410231 is an apocalyptic number.

20410231 is a deficient number, since it is larger than the sum of its proper divisors (41081).

20410231 is an equidigital number, since it uses as much as digits as its factorization.

20410231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41080.

The product of its (nonzero) digits is 48, while the sum is 13.

The square root of 20410231 is about 4517.7683650227. The cubic root of 20410231 is about 273.2851122879.

Adding to 20410231 its reverse (13201402), we get a palindrome (33611633).

The spelling of 20410231 in words is "twenty million, four hundred ten thousand, two hundred thirty-one".