21323141331 has 8 divisors (see below), whose sum is σ = 28438129104. Its totient is φ = 14211790560.

The previous prime is 21323141321. The next prime is 21323141351. The reversal of 21323141331 is 13314132312.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 21323141331 - 2⁹ = 21323140819 is a prime.

It is a super-2 number, since 2×21323141331² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (21323141321) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 895540 + ... + 919041.

It is an arithmetic number, because the mean of its divisors is an integer number (3554766138).

Almost surely, 2^21323141331 is an apocalyptic number.

21323141331 is a deficient number, since it is larger than the sum of its proper divisors (7114987773).

21323141331 is a wasteful number, since it uses less digits than its factorization.

21323141331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1818501.

The product of its digits is 1296, while the sum is 24.

Adding to 21323141331 its reverse (13314132312), we get a palindrome (34637273643).

The spelling of 21323141331 in words is "twenty-one billion, three hundred twenty-three million, one hundred forty-one thousand, three hundred thirty-one".