20020012031311 has 16 divisors (see below), whose sum is σ = 21023773309440. Its totient is φ = 19037708292960.

The previous prime is 20020012031309. The next prime is 20020012031423. The reversal of 20020012031311 is 11313021002002.

It is a cyclic number.

It is not a de Polignac number, because 20020012031311 - 2¹ = 20020012031309 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20020012061311) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3036441 + ... + 7018546.

It is an arithmetic number, because the mean of its divisors is an integer number (1313985831840).

Almost surely, 2^{20020012031311} is an apocalyptic number.

20020012031311 is a deficient number, since it is larger than the sum of its proper divisors (1003761278129).

20020012031311 is a wasteful number, since it uses less digits than its factorization.

20020012031311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10056054.

The product of its (nonzero) digits is 72, while the sum is 16.

Adding to 20020012031311 its reverse (11313021002002), we get a palindrome (31333033033313).

The spelling of 20020012031311 in words is "twenty trillion, twenty billion, twelve million, thirty-one thousand, three hundred eleven".