14312402021 has 2 divisors, whose sum is σ = 14312402022. Its totient is φ = 14312402020.

The previous prime is 14312402011. The next prime is 14312402053. The reversal of 14312402021 is 12020421341.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 10438708900 + 3873693121 = 102170^2 + 62239^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-14312402021 is a prime.

It is a super-2 number, since 2×14312402021² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 14312401984 and 14312402002.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (14312402011) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7156201010 + 7156201011.

It is an arithmetic number, because the mean of its divisors is an integer number (7156201011).

Almost surely, 2^14312402021 is an apocalyptic number.

It is an amenable number.

14312402021 is a deficient number, since it is larger than the sum of its proper divisors (1).

14312402021 is an equidigital number, since it uses as much as digits as its factorization.

14312402021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 384, while the sum is 20.

Adding to 14312402021 its reverse (12020421341), we get a palindrome (26332823362).

The spelling of 14312402021 in words is "fourteen billion, three hundred twelve million, four hundred two thousand, twenty-one".