20313211033 has 4 divisors (see below), whose sum is σ = 20314609168. Its totient is φ = 20311812900.

The previous prime is 20313211031. The next prime is 20313211057. The reversal of 20313211033 is 33011231302.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 20313211033 - 2¹ = 20313211031 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 20313211033.

It is not an unprimeable number, because it can be changed into a prime (20313211031) 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, 677043 + ... + 706408.

It is an arithmetic number, because the mean of its divisors is an integer number (5078652292).

Almost surely, 2^20313211033 is an apocalyptic number.

It is an amenable number.

20313211033 is a deficient number, since it is larger than the sum of its proper divisors (1398135).

20313211033 is a wasteful number, since it uses less digits than its factorization.

20313211033 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1398134.

The product of its (nonzero) digits is 324, while the sum is 19.

Adding to 20313211033 its reverse (33011231302), we get a palindrome (53324442335).

The spelling of 20313211033 in words is "twenty billion, three hundred thirteen million, two hundred eleven thousand, thirty-three".