20311303323 has 16 divisors (see below), whose sum is σ = 27969555456. Its totient is φ = 13097404320.

The previous prime is 20311303303. The next prime is 20311303339. The reversal of 20311303323 is 32330311302.

It is not a de Polignac number, because 20311303323 - 2¹³ = 20311295131 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20311303323.

It is not an unprimeable number, because it can be changed into a prime (20311303303) 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 15 ways as a sum of consecutive naturals, for example, 131761 + ... + 240797.

It is an arithmetic number, because the mean of its divisors is an integer number (1748097216).

Almost surely, 2^20311303323 is an apocalyptic number.

20311303323 is a deficient number, since it is larger than the sum of its proper divisors (7658252133).

20311303323 is a wasteful number, since it uses less digits than its factorization.

20311303323 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 111074.

The product of its (nonzero) digits is 972, while the sum is 21.

Adding to 20311303323 its reverse (32330311302), we get a palindrome (52641614625).

The spelling of 20311303323 in words is "twenty billion, three hundred eleven million, three hundred three thousand, three hundred twenty-three".