213248879 has 4 divisors (see below), whose sum is σ = 214205376. Its totient is φ = 212292384.

The previous prime is 213248851. The next prime is 213248881. The reversal of 213248879 is 978842312.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 213248879 - 2²⁴ = 196471663 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213248809) 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 in 3 ways as a sum of consecutive naturals, for example, 477914 + ... + 478359.

It is an arithmetic number, because the mean of its divisors is an integer number (53551344).

Almost surely, 2^213248879 is an apocalyptic number.

213248879 is a deficient number, since it is larger than the sum of its proper divisors (956497).

213248879 is an equidigital number, since it uses as much as digits as its factorization.

213248879 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 956496.

The product of its digits is 193536, while the sum is 44.

The square root of 213248879 is about 14603.0434841508. The cubic root of 213248879 is about 597.4417737067.

It can be divided in two parts, 21324 and 8879, that added together give a palindrome (30203).

The spelling of 213248879 in words is "two hundred thirteen million, two hundred forty-eight thousand, eight hundred seventy-nine".