213432000421 has 2 divisors, whose sum is σ = 213432000422. Its totient is φ = 213432000420.

The previous prime is 213432000407. The next prime is 213432000461. The reversal of 213432000421 is 124000234312.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 164629005025 + 48802995396 = 405745^2 + 220914^2 .

It is a cyclic number.

It is not a de Polignac number, because 213432000421 - 2⁹ = 213431999909 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 213432000392 and 213432000401.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (213432000461) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106716000210 + 106716000211.

It is an arithmetic number, because the mean of its divisors is an integer number (106716000211).

Almost surely, 2^213432000421 is an apocalyptic number.

It is an amenable number.

213432000421 is a deficient number, since it is larger than the sum of its proper divisors (1).

213432000421 is an equidigital number, since it uses as much as digits as its factorization.

213432000421 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1152, while the sum is 22.

Adding to 213432000421 its reverse (124000234312), we get a palindrome (337432234733).

The spelling of 213432000421 in words is "two hundred thirteen billion, four hundred thirty-two million, four hundred twenty-one", and thus it is an aban number.