20088431 has 8 divisors (see below), whose sum is σ = 22328784. Its totient is φ = 17917120.

The previous prime is 20088427. The next prime is 20088433. The reversal of 20088431 is 13488002.

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

It is a cyclic number.

It is not a de Polignac number, because 20088431 - 2² = 20088427 is a prime.

It is a super-2 number, since 2×20088431² = 807090120083522, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 20088431.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20088433) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16646 + ... + 17811.

It is an arithmetic number, because the mean of its divisors is an integer number (2791098).

Almost surely, 2^20088431 is an apocalyptic number.

20088431 is a deficient number, since it is larger than the sum of its proper divisors (2240353).

20088431 is a wasteful number, since it uses less digits than its factorization.

20088431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34521.

The product of its (nonzero) digits is 1536, while the sum is 26.

The square root of 20088431 is about 4482.0119366195. The cubic root of 20088431 is about 271.8412379091.

The spelling of 20088431 in words is "twenty million, eighty-eight thousand, four hundred thirty-one".