21332231330031 has 16 divisors (see below), whose sum is σ = 32977362443520. Its totient is φ = 13603162007160.

The previous prime is 21332231330021. The next prime is 21332231330101. The reversal of 21332231330031 is 13003313223312.

21332231330031 is a `hidden beast` number, since 2 + 1 + 3 + 322 + 3 + 1 + 3 + 300 + 31 = 666.

It is not a de Polignac number, because 21332231330031 - 2¹¹ = 21332231327983 is a prime.

It is a super-2 number, since 2×21332231330031² (a number of 27 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 21332231329977 and 21332231330004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21332231330021) 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, 17175708985 + ... + 17175710226.

It is an arithmetic number, because the mean of its divisors is an integer number (2061085152720).

Almost surely, 2^{21332231330031} is an apocalyptic number.

21332231330031 is a deficient number, since it is larger than the sum of its proper divisors (11645131113489).

21332231330031 is a wasteful number, since it uses less digits than its factorization.

21332231330031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34351419243 (or 34351419237 counting only the distinct ones).

The product of its (nonzero) digits is 5832, while the sum is 27.

Adding to 21332231330031 its reverse (13003313223312), we get a palindrome (34335544553343).

The spelling of 21332231330031 in words is "twenty-one trillion, three hundred thirty-two billion, two hundred thirty-one million, three hundred thirty thousand, thirty-one".