20020131324313 has 4 divisors (see below), whose sum is σ = 20020166419968. Its totient is φ = 20020096228660.

The previous prime is 20020131324307. The next prime is 20020131324437. The reversal of 20020131324313 is 31342313102002.

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 20020131324313 - 2¹³ = 20020131316121 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20020111324313) 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, 16677781 + ... + 17837842.

It is an arithmetic number, because the mean of its divisors is an integer number (5005041604992).

Almost surely, 2^{20020131324313} is an apocalyptic number.

It is an amenable number.

20020131324313 is a deficient number, since it is larger than the sum of its proper divisors (35095655).

20020131324313 is an equidigital number, since it uses as much as digits as its factorization.

20020131324313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35095654.

The product of its (nonzero) digits is 2592, while the sum is 25.

Adding to 20020131324313 its reverse (31342313102002), we get a palindrome (51362444426315).

The spelling of 20020131324313 in words is "twenty trillion, twenty billion, one hundred thirty-one million, three hundred twenty-four thousand, three hundred thirteen".