231317090213 has 16 divisors (see below), whose sum is σ = 260614013760. Its totient is φ = 203461689600.

The previous prime is 231317090201. The next prime is 231317090219. The reversal of 231317090213 is 312090713132.

It is a cyclic number.

It is not a de Polignac number, because 231317090213 - 2⁸ = 231317089957 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 231317090213.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231317090219) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1514708 + ... + 1660413.

It is an arithmetic number, because the mean of its divisors is an integer number (16288375860).

Almost surely, 2^231317090213 is an apocalyptic number.

It is an amenable number.

231317090213 is a deficient number, since it is larger than the sum of its proper divisors (29296923547).

231317090213 is a wasteful number, since it uses less digits than its factorization.

231317090213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3175348.

The product of its (nonzero) digits is 6804, while the sum is 32.

The spelling of 231317090213 in words is "two hundred thirty-one billion, three hundred seventeen million, ninety thousand, two hundred thirteen".