2031321140 has 24 divisors (see below), whose sum is σ = 4287885000. Its totient is φ = 808316928.

The previous prime is 2031321139. The next prime is 2031321311. The reversal of 2031321140 is 411231302.

It can be written as a sum of positive squares in 4 ways, for example, as 21771556 + 2009549584 = 4666^2 + 44828^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 259265 + ... + 266984.

It is an arithmetic number, because the mean of its divisors is an integer number (178661875).

Almost surely, 2^2031321140 is an apocalyptic number.

2031321140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2031321140 is an abundant number, since it is smaller than the sum of its proper divisors (2256563860).

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

2031321140 is a wasteful number, since it uses less digits than its factorization.

2031321140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 526451 (or 526449 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 2031321140 is about 45070.1801638289. The cubic root of 2031321140 is about 1266.4640394560.

Adding to 2031321140 its reverse (411231302), we get a palindrome (2442552442).

The spelling of 2031321140 in words is "two billion, thirty-one million, three hundred twenty-one thousand, one hundred forty".