21323301131231 has 8 divisors (see below), whose sum is σ = 23262059942400. Its totient is φ = 19384588468440.

The previous prime is 21323301131221. The next prime is 21323301131257. The reversal of 21323301131231 is 13213110332312.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-21323301131231 is a prime.

It is a super-4 number, since 4×21323301131231⁴ (a number of 54 digits) contains 4444 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 21323301131231.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21323301131221) 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, 10567421 + ... + 12422438.

It is an arithmetic number, because the mean of its divisors is an integer number (2907757492800).

Almost surely, 2^{21323301131231} is an apocalyptic number.

21323301131231 is a deficient number, since it is larger than the sum of its proper divisors (1938758811169).

21323301131231 is a wasteful number, since it uses less digits than its factorization.

21323301131231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23074189.

The product of its (nonzero) digits is 1944, while the sum is 26.

Adding to 21323301131231 its reverse (13213110332312), we get a palindrome (34536411463543).

The spelling of 21323301131231 in words is "twenty-one trillion, three hundred twenty-three billion, three hundred one million, one hundred thirty-one thousand, two hundred thirty-one".