20202131231213 has 8 divisors (see below), whose sum is σ = 20356490331936. Its totient is φ = 20047774318000.

The previous prime is 20202131231153. The next prime is 20202131231231. The reversal of 20202131231213 is 31213213120202.

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

It is a cyclic number.

It is not a de Polignac number, because 20202131231213 - 2²⁶ = 20202064122349 is a prime.

It is a super-2 number, since 2×20202131231213² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20202131234213) 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, 21321770 + ... + 22249092.

It is an arithmetic number, because the mean of its divisors is an integer number (2544561291492).

Almost surely, 2^{20202131231213} is an apocalyptic number.

It is an amenable number.

20202131231213 is a deficient number, since it is larger than the sum of its proper divisors (154359100723).

20202131231213 is a wasteful number, since it uses less digits than its factorization.

20202131231213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1093755.

The product of its (nonzero) digits is 864, while the sum is 23.

Adding to 20202131231213 its reverse (31213213120202), we get a palindrome (51415344351415).

The spelling of 20202131231213 in words is "twenty trillion, two hundred two billion, one hundred thirty-one million, two hundred thirty-one thousand, two hundred thirteen".