7731947330242 has 32 divisors (see below), whose sum is σ = 12633022934784. Its totient is φ = 3538962187200.

The previous prime is 7731947330227. The next prime is 7731947330249. The reversal of 7731947330242 is 2420337491377.

It is a Smith number, since the sum of its digits (52) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a self number, because there is not a number n which added to its sum of digits gives 7731947330242.

It is not an unprimeable number, because it can be changed into a prime (7731947330249) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 37132734 + ... + 37340377.

It is an arithmetic number, because the mean of its divisors is an integer number (394781966712).

Almost surely, 2^{7731947330242} is an apocalyptic number.

7731947330242 is a deficient number, since it is larger than the sum of its proper divisors (4901075604542).

7731947330242 is a wasteful number, since it uses less digits than its factorization.

7731947330242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74473234.

The product of its (nonzero) digits is 5334336, while the sum is 52.

The spelling of 7731947330242 in words is "seven trillion, seven hundred thirty-one billion, nine hundred forty-seven million, three hundred thirty thousand, two hundred forty-two".