20124031 has 2 divisors, whose sum is σ = 20124032. Its totient is φ = 20124030.

The previous prime is 20124023. The next prime is 20124079. The reversal of 20124031 is 13042102.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20124031 - 2³ = 20124023 is a prime.

It is a super-2 number, since 2×20124031² = 809953247377922, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20124331) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10062015 + 10062016.

It is an arithmetic number, because the mean of its divisors is an integer number (10062016).

Almost surely, 2^20124031 is an apocalyptic number.

20124031 is a deficient number, since it is larger than the sum of its proper divisors (1).

20124031 is an equidigital number, since it uses as much as digits as its factorization.

20124031 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 48, while the sum is 13.

The square root of 20124031 is about 4485.9816094139. The cubic root of 20124031 is about 272.0017255874.

Adding to 20124031 its reverse (13042102), we get a palindrome (33166133).

The spelling of 20124031 in words is "twenty million, one hundred twenty-four thousand, thirty-one".