213261030 has 48 divisors (see below), whose sum is σ = 561178800. Its totient is φ = 56182464.

The previous prime is 213261017. The next prime is 213261031. The reversal of 213261030 is 30162312.

213261030 is a `hidden beast` number, since 21 + 3 + 2 + 610 + 30 = 666.

213261030 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 213260994 and 213261012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213261031) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6805 + ... + 21744.

It is an arithmetic number, because the mean of its divisors is an integer number (11691225).

Almost surely, 2^213261030 is an apocalyptic number.

213261030 is an abundant number, since it is smaller than the sum of its proper divisors (347917770).

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

213261030 is a wasteful number, since it uses less digits than its factorization.

213261030 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28645 (or 28642 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

The square root of 213261030 is about 14603.4595216339. The cubic root of 213261030 is about 597.4531209755.

The spelling of 213261030 in words is "two hundred thirteen million, two hundred sixty-one thousand, thirty".