20031012013311 has 24 divisors (see below), whose sum is σ = 31159647529920. Its totient is φ = 12326659718976.

The previous prime is 20031012013163. The next prime is 20031012013333. The reversal of 20031012013311 is 11331021013002.

20031012013311 is a `hidden beast` number, since 2 + 0 + 0 + 310 + 1 + 20 + 1 + 331 + 1 = 666.

It is not a de Polignac number, because 20031012013311 - 2¹³ = 20031012005119 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20031012013361) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 12507610 + ... + 14017928.

It is an arithmetic number, because the mean of its divisors is an integer number (1298318647080).

Almost surely, 2^{20031012013311} is an apocalyptic number.

20031012013311 is a deficient number, since it is larger than the sum of its proper divisors (11128635516609).

20031012013311 is a wasteful number, since it uses less digits than its factorization.

20031012013311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1623695 (or 1623692 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 18.

Adding to 20031012013311 its reverse (11331021013002), we get a palindrome (31362033026313).

The spelling of 20031012013311 in words is "twenty trillion, thirty-one billion, twelve million, thirteen thousand, three hundred eleven".