213261250 has 20 divisors (see below), whose sum is σ = 399739230. Its totient is φ = 85304000.

The previous prime is 213261227. The next prime is 213261253. The reversal of 213261250 is 52162312.

213261250 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 5 ways, for example, as 13010449 + 200250801 = 3607^2 + 14151^2 .

It is not an unprimeable number, because it can be changed into a prime (213261253) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 84055 + ... + 86554.

Almost surely, 2^213261250 is an apocalyptic number.

213261250 is a deficient number, since it is larger than the sum of its proper divisors (186477980).

213261250 is an equidigital number, since it uses as much as digits as its factorization.

213261250 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 170631 (or 170616 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 22.

The square root of 213261250 is about 14603.4670540937. The cubic root of 213261250 is about 597.4533264196.

It can be divided in two parts, 2 and 13261250, that multiplied together give a square (26522500 = 5150²).

The spelling of 213261250 in words is "two hundred thirteen million, two hundred sixty-one thousand, two hundred fifty".