213235650 has 36 divisors (see below), whose sum is σ = 572894322. Its totient is φ = 56862720.

The previous prime is 213235621. The next prime is 213235657. The reversal of 213235650 is 56532312.

213235650 is a `hidden beast` number, since 2 + 1 + 3 + 2 + 3 + 5 + 650 = 666.

It can be written as a sum of positive squares in 3 ways, for example, as 160047801 + 53187849 = 12651^2 + 7293^2 .

It is not an unprimeable number, because it can be changed into a prime (213235657) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 236479 + ... + 237378.

Almost surely, 2^213235650 is an apocalyptic number.

213235650 is an abundant number, since it is smaller than the sum of its proper divisors (359658672).

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

213235650 is a wasteful number, since it uses less digits than its factorization.

213235650 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 473875 (or 473867 counting only the distinct ones).

The product of its (nonzero) digits is 5400, while the sum is 27.

The square root of 213235650 is about 14602.5905236023. The cubic root of 213235650 is about 597.4294192522.

Adding to 213235650 its reverse (56532312), we get a palindrome (269767962).

The spelling of 213235650 in words is "two hundred thirteen million, two hundred thirty-five thousand, six hundred fifty".