20213001032231 has 4 divisors (see below), whose sum is σ = 23100572608272. Its totient is φ = 17325429456192.

The previous prime is 20213001032219. The next prime is 20213001032243. The reversal of 20213001032231 is 13223010031202.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (20213001032219) and next prime (20213001032243).

It is a cyclic number.

It is not a de Polignac number, because 20213001032231 - 2⁶ = 20213001032167 is a prime.

It is a super-2 number, since 2×20213001032231² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20213001032201) 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, 1443785788010 + ... + 1443785788023.

It is an arithmetic number, because the mean of its divisors is an integer number (5775143152068).

Almost surely, 2^{20213001032231} is an apocalyptic number.

20213001032231 is a deficient number, since it is larger than the sum of its proper divisors (2887571576041).

20213001032231 is an equidigital number, since it uses as much as digits as its factorization.

20213001032231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2887571576040.

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 20213001032231 its reverse (13223010031202), we get a palindrome (33436011063433).

The spelling of 20213001032231 in words is "twenty trillion, two hundred thirteen billion, one million, thirty-two thousand, two hundred thirty-one".