213090 has 16 divisors (see below), whose sum is σ = 511488. Its totient is φ = 56816.

The previous prime is 213079. The next prime is 213091. The reversal of 213090 is 90312.

213090 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

213090 is an esthetic number in base 15, because in such base its adjacent digits differ by 1.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a nialpdrome in base 15.

It is not an unprimeable number, because it can be changed into a prime (213091) by changing a digit.

213090 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3522 + ... + 3581.

It is an arithmetic number, because the mean of its divisors is an integer number (31968).

2²¹³⁰⁹⁰ is an apocalyptic number.

213090 is an abundant number, since it is smaller than the sum of its proper divisors (298398).

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

213090 is a wasteful number, since it uses less digits than its factorization.

213090 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7113.

The product of its (nonzero) digits is 54, while the sum is 15.

The square root of 213090 is about 461.6167241338. The cubic root of 213090 is about 59.7293364119.

The spelling of 213090 in words is "two hundred thirteen thousand, ninety".