2031231313 has 8 divisors (see below), whose sum is σ = 2065777280. Its totient is φ = 1996963200.

The previous prime is 2031231287. The next prime is 2031231317. The reversal of 2031231313 is 3131321302.

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 2031231313 - 2⁹ = 2031230801 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2031231317) 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, 54693 + ... + 83986.

It is an arithmetic number, because the mean of its divisors is an integer number (258222160).

Almost surely, 2^2031231313 is an apocalyptic number.

It is an amenable number.

2031231313 is a deficient number, since it is larger than the sum of its proper divisors (34545967).

2031231313 is a wasteful number, since it uses less digits than its factorization.

2031231313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 138927.

The product of its (nonzero) digits is 324, while the sum is 19.

The square root of 2031231313 is about 45069.1836291717. The cubic root of 2031231313 is about 1266.4453710895.

Adding to 2031231313 its reverse (3131321302), we get a palindrome (5162552615).

The spelling of 2031231313 in words is "two billion, thirty-one million, two hundred thirty-one thousand, three hundred thirteen".