31442340113 has 8 divisors (see below), whose sum is σ = 31605856128. Its totient is φ = 31279207024.

The previous prime is 31442340109. The next prime is 31442340179. The reversal of 31442340113 is 31104324413.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 31442340113 - 2² = 31442340109 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (31442340103) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 69656 + ... + 260262.

It is an arithmetic number, because the mean of its divisors is an integer number (3950732016).

Almost surely, 2^31442340113 is an apocalyptic number.

It is an amenable number.

31442340113 is a deficient number, since it is larger than the sum of its proper divisors (163516015).

31442340113 is a wasteful number, since it uses less digits than its factorization.

31442340113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 191463.

The product of its (nonzero) digits is 3456, while the sum is 26.

Adding to 31442340113 its reverse (31104324413), we get a palindrome (62546664526).

The spelling of 31442340113 in words is "thirty-one billion, four hundred forty-two million, three hundred forty thousand, one hundred thirteen".