20041031 has 2 divisors, whose sum is σ = 20041032. Its totient is φ = 20041030.

The previous prime is 20041003. The next prime is 20041037. The reversal of 20041031 is 13014002.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20041031 - 2¹⁸ = 19778887 is a prime.

It is a super-3 number, since 3×20041031³ (a number of 23 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20041037) 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 as a sum of consecutive naturals, namely, 10020515 + 10020516.

It is an arithmetic number, because the mean of its divisors is an integer number (10020516).

Almost surely, 2^20041031 is an apocalyptic number.

20041031 is a deficient number, since it is larger than the sum of its proper divisors (1).

20041031 is an equidigital number, since it uses as much as digits as its factorization.

20041031 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 24, while the sum is 11.

The square root of 20041031 is about 4476.7210098464. The cubic root of 20041031 is about 271.6272603127.

Adding to 20041031 its reverse (13014002), we get a palindrome (33055033).

The spelling of 20041031 in words is "twenty million, forty-one thousand, thirty-one".