2020531231 has 4 divisors (see below), whose sum is σ = 2126875000. Its totient is φ = 1914187464.

The previous prime is 2020531213. The next prime is 2020531273. The reversal of 2020531231 is 1321350202.

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 2020531231 - 2⁵ = 2020531199 is a prime.

It is a super-2 number, since 2×2020531231² = 8165092910892750722, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (19), and also a Moran number because the ratio is a prime number: 106343749 = 2020531231 / (2 + 0 + 2 + 0 + 5 + 3 + 1 + 2 + 3 + 1).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2020531199 and 2020531208.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2020538231) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 53171856 + ... + 53171893.

It is an arithmetic number, because the mean of its divisors is an integer number (531718750).

Almost surely, 2^2020531231 is an apocalyptic number.

2020531231 is a deficient number, since it is larger than the sum of its proper divisors (106343769).

2020531231 is a wasteful number, since it uses less digits than its factorization.

2020531231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 106343768.

The product of its (nonzero) digits is 360, while the sum is 19.

The square root of 2020531231 is about 44950.3195872955. The cubic root of 2020531231 is about 1264.2176691363.

Adding to 2020531231 its reverse (1321350202), we get a palindrome (3341881433).

The spelling of 2020531231 in words is "two billion, twenty million, five hundred thirty-one thousand, two hundred thirty-one".