20021314311231 has 8 divisors (see below), whose sum is σ = 26696033738880. Its totient is φ = 13347068878872.

The previous prime is 20021314311203. The next prime is 20021314311391. The reversal of 20021314311231 is 13211341312002.

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

It is not a de Polignac number, because 20021314311231 - 2³⁵ = 19986954572863 is a prime.

It is a super-2 number, since 2×20021314311231² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20021314315231) 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, 118400251 + ... + 118569228.

It is an arithmetic number, because the mean of its divisors is an integer number (3337004217360).

Almost surely, 2^{20021314311231} is an apocalyptic number.

20021314311231 is a deficient number, since it is larger than the sum of its proper divisors (6674719427649).

20021314311231 is a wasteful number, since it uses less digits than its factorization.

20021314311231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 236997645.

The product of its (nonzero) digits is 864, while the sum is 24.

Adding to 20021314311231 its reverse (13211341312002), we get a palindrome (33232655623233).

The spelling of 20021314311231 in words is "twenty trillion, twenty-one billion, three hundred fourteen million, three hundred eleven thousand, two hundred thirty-one".