21311332030 has 8 divisors (see below), whose sum is σ = 38360397672. Its totient is φ = 8524532808.

The previous prime is 21311331997. The next prime is 21311332057. The reversal of 21311332030 is 3023311312.

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

It is a junction number, because it is equal to n+sod(n) for n = 21311331989 and 21311332007.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1065566592 + ... + 1065566611.

It is an arithmetic number, because the mean of its divisors is an integer number (4795049709).

Almost surely, 2^21311332030 is an apocalyptic number.

21311332030 is a deficient number, since it is larger than the sum of its proper divisors (17049065642).

21311332030 is a wasteful number, since it uses less digits than its factorization.

21311332030 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2131133210.

The product of its (nonzero) digits is 324, while the sum is 19.

Adding to 21311332030 its reverse (3023311312), we get a palindrome (24334643342).

It can be divided in two parts, 2131 and 1332030, that added together give a triangular number (1334161 = T₁₆₃₃).

The spelling of 21311332030 in words is "twenty-one billion, three hundred eleven million, three hundred thirty-two thousand, thirty".