213425306 has 4 divisors (see below), whose sum is σ = 320137962. Its totient is φ = 106712652.

The previous prime is 213425291. The next prime is 213425321. The reversal of 213425306 is 603524312.

213425306 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (213425291) and next prime (213425321).

It can be written as a sum of positive squares in only one way, i.e., 128029225 + 85396081 = 11315^2 + 9241^2 .

It is a super-2 number, since 2×213425306² = 91100722482387272, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 53356325 + ... + 53356328.

Almost surely, 2^213425306 is an apocalyptic number.

213425306 is a deficient number, since it is larger than the sum of its proper divisors (106712656).

213425306 is a wasteful number, since it uses less digits than its factorization.

213425306 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106712655.

The product of its (nonzero) digits is 4320, while the sum is 26.

The square root of 213425306 is about 14609.0829965470. The cubic root of 213425306 is about 597.6064886092.

Adding to 213425306 its reverse (603524312), we get a palindrome (816949618).

The spelling of 213425306 in words is "two hundred thirteen million, four hundred twenty-five thousand, three hundred six".