258305213 has 4 divisors (see below), whose sum is σ = 261417408. Its totient is φ = 255193020.

The previous prime is 258305189. The next prime is 258305219. The reversal of 258305213 is 312503852.

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 a de Polignac number, because none of the positive numbers 2^k-258305213 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 (258305219) 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, 1555973 + ... + 1556138.

It is an arithmetic number, because the mean of its divisors is an integer number (65354352).

Almost surely, 2^258305213 is an apocalyptic number.

It is an amenable number.

258305213 is a deficient number, since it is larger than the sum of its proper divisors (3112195).

258305213 is an equidigital number, since it uses as much as digits as its factorization.

258305213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3112194.

The product of its (nonzero) digits is 7200, while the sum is 29.

The square root of 258305213 is about 16071.8764616954. The cubic root of 258305213 is about 636.8606127084.

The spelling of 258305213 in words is "two hundred fifty-eight million, three hundred five thousand, two hundred thirteen".