20202131443313 has 4 divisors (see below), whose sum is σ = 20202424521840. Its totient is φ = 20201838364788.

The previous prime is 20202131443237. The next prime is 20202131443321. The reversal of 20202131443313 is 31334413120202.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 20202131443313 - 2²⁸ = 20201863007857 is a prime.

It is a super-2 number, since 2×20202131443313² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (20202131443343) 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, 146435843 + ... + 146573736.

It is an arithmetic number, because the mean of its divisors is an integer number (5050606130460).

Almost surely, 2^{20202131443313} is an apocalyptic number.

It is an amenable number.

20202131443313 is a deficient number, since it is larger than the sum of its proper divisors (293078527).

20202131443313 is an equidigital number, since it uses as much as digits as its factorization.

20202131443313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 293078526.

The product of its (nonzero) digits is 10368, while the sum is 29.

Adding to 20202131443313 its reverse (31334413120202), we get a palindrome (51536544563515).

The spelling of 20202131443313 in words is "twenty trillion, two hundred two billion, one hundred thirty-one million, four hundred forty-three thousand, three hundred thirteen".