2031320312 has 32 divisors (see below), whose sum is σ = 4502930400. Its totient is φ = 840545664.

The previous prime is 2031320311. The next prime is 2031320351. The reversal of 2031320312 is 2130231302.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2031320311) 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, 623783 + ... + 627030.

It is an arithmetic number, because the mean of its divisors is an integer number (140716575).

Almost surely, 2^2031320312 is an apocalyptic number.

It is an amenable number.

2031320312 is an abundant number, since it is smaller than the sum of its proper divisors (2471610088).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2031320312 is a wasteful number, since it uses less digits than its factorization.

2031320312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1250855 (or 1250851 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 17.

The square root of 2031320312 is about 45070.1709781536. The cubic root of 2031320312 is about 1266.4638673787.

Adding to 2031320312 its reverse (2130231302), we get a palindrome (4161551614).

The spelling of 2031320312 in words is "two billion, thirty-one million, three hundred twenty thousand, three hundred twelve".