31983939742 has 8 divisors (see below), whose sum is σ = 48001312800. Its totient is φ = 15983502144.

The previous prime is 31983939703. The next prime is 31983939749. The reversal of 31983939742 is 24793938913.

It is a happy number.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31983939749) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4229142 + ... + 4236697.

It is an arithmetic number, because the mean of its divisors is an integer number (6000164100).

Almost surely, 2^31983939742 is an apocalyptic number.

31983939742 is a deficient number, since it is larger than the sum of its proper divisors (16017373058).

31983939742 is a wasteful number, since it uses less digits than its factorization.

31983939742 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8467730.

The product of its digits is 8817984, while the sum is 58.

The spelling of 31983939742 in words is "thirty-one billion, nine hundred eighty-three million, nine hundred thirty-nine thousand, seven hundred forty-two".