2031351331013 has 4 divisors (see below), whose sum is σ = 2031381740640. Its totient is φ = 2031320921388.

The previous prime is 2031351331007. The next prime is 2031351331057. The reversal of 2031351331013 is 3101331531302.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2031351331013 - 2⁴ = 2031351330997 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 (2031351331213) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15104393 + ... + 15238286.

It is an arithmetic number, because the mean of its divisors is an integer number (507845435160).

Almost surely, 2^{2031351331013} is an apocalyptic number.

It is an amenable number.

2031351331013 is a deficient number, since it is larger than the sum of its proper divisors (30409627).

2031351331013 is an equidigital number, since it uses as much as digits as its factorization.

2031351331013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30409626.

The product of its (nonzero) digits is 2430, while the sum is 26.

Adding to 2031351331013 its reverse (3101331531302), we get a palindrome (5132682862315).

The spelling of 2031351331013 in words is "two trillion, thirty-one billion, three hundred fifty-one million, three hundred thirty-one thousand, thirteen".