3131242443 has 18 divisors (see below), whose sum is σ = 5261340084. Its totient is φ = 1789281144.

The previous prime is 3131242403. The next prime is 3131242459. The reversal of 3131242443 is 3442421313.

It is not a de Polignac number, because 3131242443 - 2⁸ = 3131242187 is a prime.

It is not an unprimeable number, because it can be changed into a prime (3131242403) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 3549721 + ... + 3550602.

Almost surely, 2^3131242443 is an apocalyptic number.

3131242443 is a deficient number, since it is larger than the sum of its proper divisors (2130097641).

3131242443 is a wasteful number, since it uses less digits than its factorization.

3131242443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7100343 (or 7100333 counting only the distinct ones).

The product of its digits is 6912, while the sum is 27.

The square root of 3131242443 is about 55957.5056895856. The cubic root of 3131242443 is about 1462.9817156968.

Adding to 3131242443 its reverse (3442421313), we get a palindrome (6573663756).

The spelling of 3131242443 in words is "three billion, one hundred thirty-one million, two hundred forty-two thousand, four hundred forty-three".