20204031 has 8 divisors (see below), whose sum is σ = 27512064. Its totient is φ = 13182680.

The previous prime is 20204029. The next prime is 20204047. The reversal of 20204031 is 13040202.

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 20204031 - 2¹ = 20204029 is a prime.

It is a super-2 number, since 2×20204031² = 816405737297922, which contains 22 as substring.

It is a plaindrome in base 16.

It is a junction number, because it is equal to n+sod(n) for n = 20203998 and 20204016.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20204071) 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, 71505 + ... + 71786.

It is an arithmetic number, because the mean of its divisors is an integer number (3439008).

Almost surely, 2^20204031 is an apocalyptic number.

20204031 is a deficient number, since it is larger than the sum of its proper divisors (7308033).

20204031 is a wasteful number, since it uses less digits than its factorization.

20204031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 143341.

The product of its (nonzero) digits is 48, while the sum is 12.

The square root of 20204031 is about 4494.8894313431. The cubic root of 20204031 is about 272.3616827428.

Adding to 20204031 its reverse (13040202), we get a palindrome (33244233).

The spelling of 20204031 in words is "twenty million, two hundred four thousand, thirty-one".