213400431427 has 2 divisors, whose sum is σ = 213400431428. Its totient is φ = 213400431426.

The previous prime is 213400431383. The next prime is 213400431487. The reversal of 213400431427 is 724134004312.

213400431427 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 213400431427 - 2¹¹ = 213400429379 is a prime.

It is not a weakly prime, because it can be changed into another prime (213400431487) by changing a digit.

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 as a sum of consecutive naturals, namely, 106700215713 + 106700215714.

It is an arithmetic number, because the mean of its divisors is an integer number (106700215714).

Almost surely, 2^213400431427 is an apocalyptic number.

213400431427 is a deficient number, since it is larger than the sum of its proper divisors (1).

213400431427 is an equidigital number, since it uses as much as digits as its factorization.

213400431427 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 16128, while the sum is 31.

Adding to 213400431427 its reverse (724134004312), we get a palindrome (937534435739).

The spelling of 213400431427 in words is "two hundred thirteen billion, four hundred million, four hundred thirty-one thousand, four hundred twenty-seven".