213420253 has 8 divisors (see below), whose sum is σ = 214729272. Its totient is φ = 212115456.

The previous prime is 213420203. The next prime is 213420257. The reversal of 213420253 is 352024312.

213420253 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 4 ways, for example, as 82500889 + 130919364 = 9083^2 + 11442^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-213420253 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213420257) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 194001 + ... + 195097.

It is an arithmetic number, because the mean of its divisors is an integer number (26841159).

Almost surely, 2^213420253 is an apocalyptic number.

It is an amenable number.

213420253 is a deficient number, since it is larger than the sum of its proper divisors (1309019).

213420253 is a wasteful number, since it uses less digits than its factorization.

213420253 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2111.

The product of its (nonzero) digits is 1440, while the sum is 22.

The square root of 213420253 is about 14608.9100551684. The cubic root of 213420253 is about 597.6017723153.

Adding to 213420253 its reverse (352024312), we get a palindrome (565444565).

The spelling of 213420253 in words is "two hundred thirteen million, four hundred twenty thousand, two hundred fifty-three".