2031320140 has 24 divisors (see below), whose sum is σ = 4516700832. Its totient is φ = 764732160.

The previous prime is 2031320117. The next prime is 2031320143. The reversal of 2031320140 is 410231302.

It is a happy number.

It is a super-2 number, since 2×2031320140² = 8252523022339239200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2031320143) 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, 2986896 + ... + 2987575.

It is an arithmetic number, because the mean of its divisors is an integer number (188195868).

Almost surely, 2^2031320140 is an apocalyptic number.

2031320140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2031320140 is an abundant number, since it is smaller than the sum of its proper divisors (2485380692).

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

2031320140 is a wasteful number, since it uses less digits than its factorization.

2031320140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5974497 (or 5974495 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 2031320140 is about 45070.1690700179. The cubic root of 2031320140 is about 1266.4638316332.

Adding to 2031320140 its reverse (410231302), we get a palindrome (2441551442).

The spelling of 2031320140 in words is "two billion, thirty-one million, three hundred twenty thousand, one hundred forty".