231670213 has 8 divisors (see below), whose sum is σ = 238654080. Its totient is φ = 224749920.

The previous prime is 231670199. The next prime is 231670217. The reversal of 231670213 is 312076132.

231670213 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 231670213 - 2¹³ = 231662021 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 (231670217) 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, 8445 + ... + 23122.

It is an arithmetic number, because the mean of its divisors is an integer number (29831760).

Almost surely, 2^231670213 is an apocalyptic number.

It is an amenable number.

231670213 is a deficient number, since it is larger than the sum of its proper divisors (6983867).

231670213 is a wasteful number, since it uses less digits than its factorization.

231670213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31787.

The product of its (nonzero) digits is 1512, while the sum is 25.

The square root of 231670213 is about 15220.7165731446. The cubic root of 231670213 is about 614.1720747292.

The spelling of 231670213 in words is "two hundred thirty-one million, six hundred seventy thousand, two hundred thirteen".