231400213 has 8 divisors (see below), whose sum is σ = 260580096. Its totient is φ = 203577600.

The previous prime is 231400207. The next prime is 231400219. The reversal of 231400213 is 312004132.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (231400207) and next prime (231400219).

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 231400213 - 2⁵ = 231400181 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 (231400219) 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, 338956 + ... + 339637.

It is an arithmetic number, because the mean of its divisors is an integer number (32572512).

Almost surely, 2^231400213 is an apocalyptic number.

It is an amenable number.

231400213 is a deficient number, since it is larger than the sum of its proper divisors (29179883).

231400213 is a wasteful number, since it uses less digits than its factorization.

231400213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 678635.

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 231400213 is about 15211.8444969701. The cubic root of 231400213 is about 613.9333864079.

Adding to 231400213 its reverse (312004132), we get a palindrome (543404345).

The spelling of 231400213 in words is "two hundred thirty-one million, four hundred thousand, two hundred thirteen".