20031020113311 has 24 divisors (see below), whose sum is σ = 30635851259520. Its totient is φ = 12568412054016.

The previous prime is 20031020113303. The next prime is 20031020113387. The reversal of 20031020113311 is 11331102013002.

20031020113311 is a `hidden beast` number, since 2 + 0 + 0 + 310 + 20 + 1 + 1 + 331 + 1 = 666.

It is not a de Polignac number, because 20031020113311 - 2³ = 20031020113303 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20031020113211) 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, 44217010 + ... + 44667728.

It is an arithmetic number, because the mean of its divisors is an integer number (1276493802480).

Almost surely, 2^{20031020113311} is an apocalyptic number.

20031020113311 is a deficient number, since it is larger than the sum of its proper divisors (10604831146209).

20031020113311 is a wasteful number, since it uses less digits than its factorization.

20031020113311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 741215 (or 741212 counting only the distinct ones).

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

Adding to 20031020113311 its reverse (11331102013002), we get a palindrome (31362122126313).

The spelling of 20031020113311 in words is "twenty trillion, thirty-one billion, twenty million, one hundred thirteen thousand, three hundred eleven".