20131022311 has 16 divisors (see below), whose sum is σ = 21388989600. Its totient is φ = 18881372160.

The previous prime is 20131022309. The next prime is 20131022323. The reversal of 20131022311 is 11322013102.

It is a cyclic number.

It is not a de Polignac number, because 20131022311 - 2¹ = 20131022309 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 (20131022111) 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, 12372280 + ... + 12373906.

It is an arithmetic number, because the mean of its divisors is an integer number (1336811850).

Almost surely, 2^20131022311 is an apocalyptic number.

20131022311 is a deficient number, since it is larger than the sum of its proper divisors (1257967289).

20131022311 is a wasteful number, since it uses less digits than its factorization.

20131022311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3714.

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

Adding to 20131022311 its reverse (11322013102), we get a palindrome (31453035413).

The spelling of 20131022311 in words is "twenty billion, one hundred thirty-one million, twenty-two thousand, three hundred eleven".