31661104242 has 16 divisors (see below), whose sum is σ = 63324091872. Its totient is φ = 10553387520.

The previous prime is 31661104231. The next prime is 31661104247. The reversal of 31661104242 is 24240116613.

It is not an unprimeable number, because it can be changed into a prime (31661104247) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 238642 + ... + 346802.

It is an arithmetic number, because the mean of its divisors is an integer number (3957755742).

Almost surely, 2^31661104242 is an apocalyptic number.

31661104242 is an abundant number, since it is smaller than the sum of its proper divisors (31662987630).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

31661104242 is a wasteful number, since it uses less digits than its factorization.

31661104242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 156953.

The product of its (nonzero) digits is 6912, while the sum is 30.

The spelling of 31661104242 in words is "thirty-one billion, six hundred sixty-one million, one hundred four thousand, two hundred forty-two".