21233232312331 has 8 divisors (see below), whose sum is σ = 22866594297120. Its totient is φ = 19599875530752.

The previous prime is 21233232312301. The next prime is 21233232312337. The reversal of 21233232312331 is 13321323233212.

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-21233232312331 is a prime.

It is a super-2 number, since 2×21233232312331² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 21233232312293 and 21233232312302.

It is not an unprimeable number, because it can be changed into a prime (21233232312337) 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, 12987915 + ... + 14531083.

It is an arithmetic number, because the mean of its divisors is an integer number (2858324287140).

Almost surely, 2^{21233232312331} is an apocalyptic number.

21233232312331 is a deficient number, since it is larger than the sum of its proper divisors (1633361984789).

21233232312331 is a wasteful number, since it uses less digits than its factorization.

21233232312331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2601605.

The product of its digits is 23328, while the sum is 31.

Adding to 21233232312331 its reverse (13321323233212), we get a palindrome (34554555545543).

The spelling of 21233232312331 in words is "twenty-one trillion, two hundred thirty-three billion, two hundred thirty-two million, three hundred twelve thousand, three hundred thirty-one".