20312033201231 has 8 divisors (see below), whose sum is σ = 20318484234240. Its totient is φ = 20305582641592.

The previous prime is 20312033201183. The next prime is 20312033201249. The reversal of 20312033201231 is 13210233021302.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20312033201231 is a prime.

It is a super-2 number, since 2×20312033201231² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20312033201197 and 20312033201206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20312033221231) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 98583986 + ... + 98789808.

It is an arithmetic number, because the mean of its divisors is an integer number (2539810529280).

Almost surely, 2^{20312033201231} is an apocalyptic number.

20312033201231 is a deficient number, since it is larger than the sum of its proper divisors (6451033009).

20312033201231 is a wasteful number, since it uses less digits than its factorization.

20312033201231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 236685.

The product of its (nonzero) digits is 1296, while the sum is 23.

Adding to 20312033201231 its reverse (13210233021302), we get a palindrome (33522266222533).

The spelling of 20312033201231 in words is "twenty trillion, three hundred twelve billion, thirty-three million, two hundred one thousand, two hundred thirty-one".