3131448643 has 8 divisors (see below), whose sum is σ = 3273585408. Its totient is φ = 2989810824.

The previous prime is 3131448611. The next prime is 3131448647. The reversal of 3131448643 is 3468441313.

3131448643 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 3131448643 - 2⁵ = 3131448611 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3131448647) 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, 111871 + ... + 137032.

It is an arithmetic number, because the mean of its divisors is an integer number (409198176).

Almost surely, 2^3131448643 is an apocalyptic number.

3131448643 is a deficient number, since it is larger than the sum of its proper divisors (142136765).

3131448643 is a wasteful number, since it uses less digits than its factorization.

3131448643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 249473.

The product of its digits is 82944, while the sum is 37.

The square root of 3131448643 is about 55959.3481287979. The cubic root of 3131448643 is about 1463.0138286374.

Adding to 3131448643 its reverse (3468441313), we get a palindrome (6599889956).

The spelling of 3131448643 in words is "three billion, one hundred thirty-one million, four hundred forty-eight thousand, six hundred forty-three".