213147145 has 8 divisors (see below), whose sum is σ = 256106304. Its totient is φ = 170297904.

The previous prime is 213147133. The next prime is 213147157. The reversal of 213147145 is 541741312.

It is an interprime number because it is at equal distance from previous prime (213147133) and next prime (213147157).

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 213147145 - 2¹⁹ = 212622857 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23149 + ... + 31018.

It is an arithmetic number, because the mean of its divisors is an integer number (32013288).

Almost surely, 2^213147145 is an apocalyptic number.

It is an amenable number.

213147145 is a deficient number, since it is larger than the sum of its proper divisors (42959159).

213147145 is an equidigital number, since it uses as much as digits as its factorization.

213147145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54959.

The product of its digits is 3360, while the sum is 28.

The square root of 213147145 is about 14599.5597536364. The cubic root of 213147145 is about 597.3467520124.

Adding to 213147145 its reverse (541741312), we get a palindrome (754888457).

The spelling of 213147145 in words is "two hundred thirteen million, one hundred forty-seven thousand, one hundred forty-five".