20131100311 has 16 divisors (see below), whose sum is σ = 23100694848. Its totient is φ = 17185017600.

The previous prime is 20131100309. The next prime is 20131100347. The reversal of 20131100311 is 11300113102.

It is a cyclic number.

It is not a de Polignac number, because 20131100311 - 2¹ = 20131100309 is a prime.

It is a super-2 number, since 2×20131100311² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 20131100291 and 20131100300.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20131100351) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5004481 + ... + 5008501.

It is an arithmetic number, because the mean of its divisors is an integer number (1443793428).

Almost surely, 2^20131100311 is an apocalyptic number.

20131100311 is a deficient number, since it is larger than the sum of its proper divisors (2969594537).

20131100311 is a wasteful number, since it uses less digits than its factorization.

20131100311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6762.

The product of its (nonzero) digits is 18, while the sum is 13.

Adding to 20131100311 its reverse (11300113102), we get a palindrome (31431213413).

The spelling of 20131100311 in words is "twenty billion, one hundred thirty-one million, one hundred thousand, three hundred eleven".