2020540031 has 4 divisors (see below), whose sum is σ = 2021951472. Its totient is φ = 2019128592.

The previous prime is 2020540021. The next prime is 2020540057. The reversal of 2020540031 is 1300450202.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2020540031 - 2¹⁰ = 2020539007 is a prime.

It is a super-2 number, since 2×2020540031² = 8165164033746961922, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2020539991 and 2020540009.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2020540021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 703571 + ... + 706436.

It is an arithmetic number, because the mean of its divisors is an integer number (505487868).

Almost surely, 2^2020540031 is an apocalyptic number.

2020540031 is a deficient number, since it is larger than the sum of its proper divisors (1411441).

2020540031 is a wasteful number, since it uses less digits than its factorization.

2020540031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1411440.

The product of its (nonzero) digits is 240, while the sum is 17.

The square root of 2020540031 is about 44950.4174730336. The cubic root of 2020540031 is about 1264.2195044786.

Adding to 2020540031 its reverse (1300450202), we get a palindrome (3320990233).

The spelling of 2020540031 in words is "two billion, twenty million, five hundred forty thousand, thirty-one".