20431224174 has 16 divisors (see below), whose sum is σ = 40864670208. Its totient is φ = 6810037752.

The previous prime is 20431224173. The next prime is 20431224193. The reversal of 20431224174 is 47142213402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20431224173) 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, 42019 + ... + 206465.

It is an arithmetic number, because the mean of its divisors is an integer number (2554041888).

Almost surely, 2^20431224174 is an apocalyptic number.

20431224174 is an abundant number, since it is smaller than the sum of its proper divisors (20433446034).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20431224174 is a wasteful number, since it uses less digits than its factorization.

20431224174 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 185159.

The product of its (nonzero) digits is 10752, while the sum is 30.

Adding to 20431224174 its reverse (47142213402), we get a palindrome (67573437576).

The spelling of 20431224174 in words is "twenty billion, four hundred thirty-one million, two hundred twenty-four thousand, one hundred seventy-four".