20011233210031 has 4 divisors (see below), whose sum is σ = 22869980811472. Its totient is φ = 17152485608592.

The previous prime is 20011233209999. The next prime is 20011233210071. The reversal of 20011233210031 is 13001233211002.

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 20011233210031 - 2⁵ = 20011233209999 is a prime.

It is a super-3 number, since 3×20011233210031³ (a number of 41 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20011233209990 and 20011233210008.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20011233210071) 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, 1429373800710 + ... + 1429373800723.

It is an arithmetic number, because the mean of its divisors is an integer number (5717495202868).

Almost surely, 2^{20011233210031} is an apocalyptic number.

20011233210031 is a deficient number, since it is larger than the sum of its proper divisors (2858747601441).

20011233210031 is an equidigital number, since it uses as much as digits as its factorization.

20011233210031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2858747601440.

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 20011233210031 its reverse (13001233211002), we get a palindrome (33012466421033).

The spelling of 20011233210031 in words is "twenty trillion, eleven billion, two hundred thirty-three million, two hundred ten thousand, thirty-one".