20042031 has 8 divisors (see below), whose sum is σ = 28294704. Its totient is φ = 12575360.

The previous prime is 20041981. The next prime is 20042041. The reversal of 20042031 is 13024002.

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 20042031 - 2¹¹ = 20039983 is a prime.

It is a super-2 number, since 2×20042031² = 803366013209922, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 20041998 and 20042016.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20042041) 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, 196440 + ... + 196541.

It is an arithmetic number, because the mean of its divisors is an integer number (3536838).

Almost surely, 2^20042031 is an apocalyptic number.

20042031 is a deficient number, since it is larger than the sum of its proper divisors (8252673).

20042031 is a wasteful number, since it uses less digits than its factorization.

20042031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 393001.

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

The square root of 20042031 is about 4476.8326973431. The cubic root of 20042031 is about 271.6317780900.

Adding to 20042031 its reverse (13024002), we get a palindrome (33066033).

The spelling of 20042031 in words is "twenty million, forty-two thousand, thirty-one".