213154427 has 2 divisors, whose sum is σ = 213154428. Its totient is φ = 213154426.

The previous prime is 213154421. The next prime is 213154429. The reversal of 213154427 is 724451312.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 213154427 - 2¹⁰ = 213153403 is a prime.

Together with 213154429, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 213154427.

It is not a weakly prime, because it can be changed into another prime (213154421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106577213 + 106577214.

It is an arithmetic number, because the mean of its divisors is an integer number (106577214).

Almost surely, 2^213154427 is an apocalyptic number.

213154427 is a deficient number, since it is larger than the sum of its proper divisors (1).

213154427 is an equidigital number, since it uses as much as digits as its factorization.

213154427 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6720, while the sum is 29.

The square root of 213154427 is about 14599.8091425881. The cubic root of 213154427 is about 597.3535545579.

The spelling of 213154427 in words is "two hundred thirteen million, one hundred fifty-four thousand, four hundred twenty-seven".