213881346 has 24 divisors (see below), whose sum is σ = 529611264. Its totient is φ = 61108920.

The previous prime is 213881321. The next prime is 213881359. The reversal of 213881346 is 643188312.

It is a self number, because there is not a number n which added to its sum of digits gives 213881346.

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 11 ways as a sum of consecutive naturals, for example, 848610 + ... + 848861.

It is an arithmetic number, because the mean of its divisors is an integer number (22067136).

Almost surely, 2^213881346 is an apocalyptic number.

213881346 is an abundant number, since it is smaller than the sum of its proper divisors (315729918).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

213881346 is a wasteful number, since it uses less digits than its factorization.

213881346 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1697486 (or 1697483 counting only the distinct ones).

The product of its digits is 27648, while the sum is 36.

The square root of 213881346 is about 14624.6827657902. The cubic root of 213881346 is about 598.0318342654.

The spelling of 213881346 in words is "two hundred thirteen million, eight hundred eighty-one thousand, three hundred forty-six".