213011144 has 32 divisors (see below), whose sum is σ = 409207680. Its totient is φ = 103904064.

The previous prime is 213011093. The next prime is 213011159. The reversal of 213011144 is 441110312.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 148559 + ... + 149985.

It is an arithmetic number, because the mean of its divisors is an integer number (12787740).

Almost surely, 2^213011144 is an apocalyptic number.

It is an amenable number.

213011144 is a deficient number, since it is larger than the sum of its proper divisors (196196536).

213011144 is a wasteful number, since it uses less digits than its factorization.

213011144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1877 (or 1873 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 17.

The square root of 213011144 is about 14594.9013014820. The cubic root of 213011144 is about 597.2196769810.

Adding to 213011144 its reverse (441110312), we get a palindrome (654121456).

The spelling of 213011144 in words is "two hundred thirteen million, eleven thousand, one hundred forty-four".