31318788113 has 8 divisors (see below), whose sum is σ = 31382372448. Its totient is φ = 31255251264.

The previous prime is 31318788107. The next prime is 31318788157. The reversal of 31318788113 is 31188781313.

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 31318788113 - 2¹² = 31318784017 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 (31318788013) 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 7 ways as a sum of consecutive naturals, for example, 1498745 + ... + 1519497.

It is an arithmetic number, because the mean of its divisors is an integer number (3922796556).

Almost surely, 2^31318788113 is an apocalyptic number.

It is an amenable number.

31318788113 is a deficient number, since it is larger than the sum of its proper divisors (63584335).

31318788113 is a wasteful number, since it uses less digits than its factorization.

31318788113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23743.

The product of its digits is 96768, while the sum is 44.

The spelling of 31318788113 in words is "thirty-one billion, three hundred eighteen million, seven hundred eighty-eight thousand, one hundred thirteen".