21312302133323 has 8 divisors (see below), whose sum is σ = 21365013791808. Its totient is φ = 21259611208264.

The previous prime is 21312302133281. The next prime is 21312302133329. The reversal of 21312302133323 is 32333120321312.

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

It is a cyclic number.

It is not a de Polignac number, because 21312302133323 - 2¹⁴ = 21312302116939 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21312302133329) 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, 3123965 + ... + 7237662.

It is an arithmetic number, because the mean of its divisors is an integer number (2670626723976).

Almost surely, 2^{21312302133323} is an apocalyptic number.

21312302133323 is a deficient number, since it is larger than the sum of its proper divisors (52711658485).

21312302133323 is a wasteful number, since it uses less digits than its factorization.

21312302133323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10366713.

The product of its (nonzero) digits is 11664, while the sum is 29.

Adding to 21312302133323 its reverse (32333120321312), we get a palindrome (53645422454635).

The spelling of 21312302133323 in words is "twenty-one trillion, three hundred twelve billion, three hundred two million, one hundred thirty-three thousand, three hundred twenty-three".