20203012331 has 4 divisors (see below), whose sum is σ = 20277562464. Its totient is φ = 20128462200.

The previous prime is 20203012309. The next prime is 20203012373. The reversal of 20203012331 is 13321030202.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 13321030202 = 2 ⋅6660515101.

It is a cyclic number.

It is not a de Polignac number, because 20203012331 - 2¹⁴ = 20202995947 is a prime.

It is a super-2 number, since 2×20203012331² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20203012391) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 37274660 + ... + 37275201.

It is an arithmetic number, because the mean of its divisors is an integer number (5069390616).

Almost surely, 2^20203012331 is an apocalyptic number.

20203012331 is a deficient number, since it is larger than the sum of its proper divisors (74550133).

20203012331 is an equidigital number, since it uses as much as digits as its factorization.

20203012331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74550132.

The product of its (nonzero) digits is 216, while the sum is 17.

Adding to 20203012331 its reverse (13321030202), we get a palindrome (33524042533).

The spelling of 20203012331 in words is "twenty billion, two hundred three million, twelve thousand, three hundred thirty-one".