3131242642 has 16 divisors (see below), whose sum is σ = 5173601472. Its totient is φ = 1409472720.

The previous prime is 3131242633. The next prime is 3131242649. The reversal of 3131242642 is 2462421313.

It is a happy number.

3131242642 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 3131242642.

It is not an unprimeable number, because it can be changed into a prime (3131242649) 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, 688653 + ... + 693184.

It is an arithmetic number, because the mean of its divisors is an integer number (323350092).

Almost surely, 2^3131242642 is an apocalyptic number.

3131242642 is a deficient number, since it is larger than the sum of its proper divisors (2042358830).

3131242642 is a wasteful number, since it uses less digits than its factorization.

3131242642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1381953.

The product of its digits is 6912, while the sum is 28.

The square root of 3131242642 is about 55957.5074677205. The cubic root of 3131242642 is about 1462.9817466891.

Adding to 3131242642 its reverse (2462421313), we get a palindrome (5593663955).

The spelling of 3131242642 in words is "three billion, one hundred thirty-one million, two hundred forty-two thousand, six hundred forty-two".