231313135513 has 8 divisors (see below), whose sum is σ = 237005758080. Its totient is φ = 225622933920.

The previous prime is 231313135453. The next prime is 231313135531. The reversal of 231313135513 is 315531313132.

It is a happy number.

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 231313135513 - 2²⁹ = 230776264601 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (231313135913) 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 7 ways as a sum of consecutive naturals, for example, 411045 + ... + 794722.

It is an arithmetic number, because the mean of its divisors is an integer number (29625719760).

Almost surely, 2^231313135513 is an apocalyptic number.

It is an amenable number.

231313135513 is a deficient number, since it is larger than the sum of its proper divisors (5692622567).

231313135513 is a wasteful number, since it uses less digits than its factorization.

231313135513 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1210487.

The product of its digits is 12150, while the sum is 31.

Adding to 231313135513 its reverse (315531313132), we get a palindrome (546844448645).

The spelling of 231313135513 in words is "two hundred thirty-one billion, three hundred thirteen million, one hundred thirty-five thousand, five hundred thirteen".