21430304444231 has 8 divisors (see below), whose sum is σ = 21523279521744. Its totient is φ = 21337389648000.

The previous prime is 21430304444201. The next prime is 21430304444287. The reversal of 21430304444231 is 13244440303412.

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 21430304444231 - 2¹⁸ = 21430304182087 is a prime.

It is a super-2 number, since 2×21430304444231² (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 = 21430304444191 and 21430304444200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21430304444201) 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, 14357696 + ... + 15779861.

It is an arithmetic number, because the mean of its divisors is an integer number (2690409940218).

Almost surely, 2^{21430304444231} is an apocalyptic number.

21430304444231 is a deficient number, since it is larger than the sum of its proper divisors (92975077513).

21430304444231 is a wasteful number, since it uses less digits than its factorization.

21430304444231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30140641.

The product of its (nonzero) digits is 110592, while the sum is 35.

Adding to 21430304444231 its reverse (13244440303412), we get a palindrome (34674744747643).

The spelling of 21430304444231 in words is "twenty-one trillion, four hundred thirty billion, three hundred four million, four hundred forty-four thousand, two hundred thirty-one".