307213 has 8 divisors (see below), whose sum is σ = 322560. Its totient is φ = 292320.

The previous prime is 307201. The next prime is 307243. The reversal of 307213 is 312703.

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

It is a cyclic number.

It is not a de Polignac number, because 307213 - 2⁹ = 306701 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 (307243) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2356 + ... + 2482.

It is an arithmetic number, because the mean of its divisors is an integer number (40320).

2³⁰⁷²¹³ is an apocalyptic number.

It is an amenable number.

307213 is a deficient number, since it is larger than the sum of its proper divisors (15347).

307213 is a wasteful number, since it uses less digits than its factorization.

307213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 227.

The product of its (nonzero) digits is 126, while the sum is 16.

The square root of 307213 is about 554.2679857253. The cubic root of 307213 is about 67.4755650010.

Adding to 307213 its reverse (312703), we get a palindrome (619916).

The spelling of 307213 in words is "three hundred seven thousand, two hundred thirteen".