3131030140 has 96 divisors (see below), whose sum is σ = 7929492480. Its totient is φ = 1014488064.

The previous prime is 3131030137. The next prime is 3131030171. The reversal of 3131030140 is 410301313.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1294212 + ... + 1296628.

It is an arithmetic number, because the mean of its divisors is an integer number (82598880).

Almost surely, 2^3131030140 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3131030140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3964746240).

3131030140 is an abundant number, since it is smaller than the sum of its proper divisors (4798462340).

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

3131030140 is a wasteful number, since it uses less digits than its factorization.

3131030140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2939 (or 2937 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 16.

The square root of 3131030140 is about 55955.6086554333. The cubic root of 3131030140 is about 1462.9486508210.

Adding to 3131030140 its reverse (410301313), we get a palindrome (3541331453).

The spelling of 3131030140 in words is "three billion, one hundred thirty-one million, thirty thousand, one hundred forty".