21332131311 has 16 divisors (see below), whose sum is σ = 29115123840. Its totient is φ = 13885525920.

The previous prime is 21332131259. The next prime is 21332131319. The reversal of 21332131311 is 11313123312.

It is a happy number.

It is not a de Polignac number, because 21332131311 - 2¹³ = 21332123119 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21332131319) 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, 334321 + ... + 392981.

It is an arithmetic number, because the mean of its divisors is an integer number (1819695240).

Almost surely, 2^21332131311 is an apocalyptic number.

21332131311 is a deficient number, since it is larger than the sum of its proper divisors (7782992529).

21332131311 is a wasteful number, since it uses less digits than its factorization.

21332131311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61526.

The product of its digits is 324, while the sum is 21.

Adding to 21332131311 its reverse (11313123312), we get a palindrome (32645254623).

The spelling of 21332131311 in words is "twenty-one billion, three hundred thirty-two million, one hundred thirty-one thousand, three hundred eleven".