213285051 has 24 divisors (see below), whose sum is σ = 370622720. Its totient is φ = 115461936.

The previous prime is 213285047. The next prime is 213285067. The reversal of 213285051 is 150582312.

It is a happy number.

It is not a de Polignac number, because 213285051 - 2² = 213285047 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (213285041) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 87895 + ... + 90288.

Almost surely, 2^213285051 is an apocalyptic number.

213285051 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

213285051 is a deficient number, since it is larger than the sum of its proper divisors (157337669).

213285051 is a wasteful number, since it uses less digits than its factorization.

213285051 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 178215 (or 178212 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 27.

The square root of 213285051 is about 14604.2819405817. The cubic root of 213285051 is about 597.4755518319.

The spelling of 213285051 in words is "two hundred thirteen million, two hundred eighty-five thousand, fifty-one".