20310031233 has 16 divisors (see below), whose sum is σ = 30129030400. Its totient is φ = 13521978000.

The previous prime is 20310031213. The next prime is 20310031243. The reversal of 20310031233 is 33213001302.

It is not a de Polignac number, because 20310031233 - 2¹² = 20310027137 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20310031213) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 480538 + ... + 521091.

It is an arithmetic number, because the mean of its divisors is an integer number (1883064400).

Almost surely, 2^20310031233 is an apocalyptic number.

It is an amenable number.

20310031233 is a deficient number, since it is larger than the sum of its proper divisors (9818999167).

20310031233 is a wasteful number, since it uses less digits than its factorization.

20310031233 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1002389 (or 1002383 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 18.

Adding to 20310031233 its reverse (33213001302), we get a palindrome (53523032535).

The spelling of 20310031233 in words is "twenty billion, three hundred ten million, thirty-one thousand, two hundred thirty-three".