20031032311 has 4 divisors (see below), whose sum is σ = 20120857792. Its totient is φ = 19941206832.

The previous prime is 20031032297. The next prime is 20031032341. The reversal of 20031032311 is 11323013002.

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 20031032311 - 2¹⁵ = 20030999543 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20031032341) 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, 44912406 + ... + 44912851.

It is an arithmetic number, because the mean of its divisors is an integer number (5030214448).

Almost surely, 2^20031032311 is an apocalyptic number.

20031032311 is a deficient number, since it is larger than the sum of its proper divisors (89825481).

20031032311 is an equidigital number, since it uses as much as digits as its factorization.

20031032311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 89825480.

The product of its (nonzero) digits is 108, while the sum is 16.

Adding to 20031032311 its reverse (11323013002), we get a palindrome (31354045313).

The spelling of 20031032311 in words is "twenty billion, thirty-one million, thirty-two thousand, three hundred eleven".