213425513 has 4 divisors (see below), whose sum is σ = 243914880. Its totient is φ = 182936148.

The previous prime is 213425507. The next prime is 213425521. The reversal of 213425513 is 315524312.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 213425513 - 2¹⁰ = 213424489 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (213425713) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15244673 + ... + 15244686.

It is an arithmetic number, because the mean of its divisors is an integer number (60978720).

Almost surely, 2^213425513 is an apocalyptic number.

It is an amenable number.

213425513 is a deficient number, since it is larger than the sum of its proper divisors (30489367).

213425513 is an equidigital number, since it uses as much as digits as its factorization.

213425513 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30489366.

The product of its digits is 3600, while the sum is 26.

The square root of 213425513 is about 14609.0900811789. The cubic root of 213425513 is about 597.6066818142.

Adding to 213425513 its reverse (315524312), we get a palindrome (528949825).

The spelling of 213425513 in words is "two hundred thirteen million, four hundred twenty-five thousand, five hundred thirteen".