213124345 has 8 divisors (see below), whose sum is σ = 292284864. Its totient is φ = 146142384.

The previous prime is 213124333. The next prime is 213124357. The reversal of 213124345 is 543421312.

It is an interprime number because it is at equal distance from previous prime (213124333) and next prime (213124357).

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 213124345 - 2⁵ = 213124313 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, 3044599 + ... + 3044668.

It is an arithmetic number, because the mean of its divisors is an integer number (36535608).

Almost surely, 2^213124345 is an apocalyptic number.

It is an amenable number.

213124345 is a deficient number, since it is larger than the sum of its proper divisors (79160519).

213124345 is an equidigital number, since it uses as much as digits as its factorization.

213124345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6089279.

The product of its digits is 2880, while the sum is 25.

The square root of 213124345 is about 14598.7788872905. The cubic root of 213124345 is about 597.3254521859.

Adding to 213124345 its reverse (543421312), we get a palindrome (756545657).

The spelling of 213124345 in words is "two hundred thirteen million, one hundred twenty-four thousand, three hundred forty-five".