2031310521 has 16 divisors (see below), whose sum is σ = 3011870400. Its totient is φ = 1353072384.

The previous prime is 2031310511. The next prime is 2031310529. The reversal of 2031310521 is 1250131302.

It is not a de Polignac number, because 2031310521 - 2¹⁴ = 2031294137 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2031310494 and 2031310503.

It is not an unprimeable number, because it can be changed into a prime (2031310529) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1950 + ... + 63768.

It is an arithmetic number, because the mean of its divisors is an integer number (188241900).

Almost surely, 2^2031310521 is an apocalyptic number.

It is an amenable number.

2031310521 is a deficient number, since it is larger than the sum of its proper divisors (980559879).

2031310521 is a wasteful number, since it uses less digits than its factorization.

2031310521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63045 (or 63039 counting only the distinct ones).

The product of its (nonzero) digits is 180, while the sum is 18.

The square root of 2031310521 is about 45070.0623585102. The cubic root of 2031310521 is about 1266.4618325827.

Adding to 2031310521 its reverse (1250131302), we get a palindrome (3281441823).

The spelling of 2031310521 in words is "two billion, thirty-one million, three hundred ten thousand, five hundred twenty-one".