31212330113 has 8 divisors (see below), whose sum is σ = 32571788928. Its totient is φ = 29853071424.

The previous prime is 31212330109. The next prime is 31212330137. The reversal of 31212330113 is 31103321213.

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 31212330113 - 2² = 31212330109 is a prime.

It is not an unprimeable number, because it can be changed into a prime (31212330013) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 330281 + ... + 414137.

It is an arithmetic number, because the mean of its divisors is an integer number (4071473616).

Almost surely, 2^31212330113 is an apocalyptic number.

It is an amenable number.

31212330113 is a deficient number, since it is larger than the sum of its proper divisors (1359458815).

31212330113 is a wasteful number, since it uses less digits than its factorization.

31212330113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 100063.

The product of its (nonzero) digits is 324, while the sum is 20.

Adding to 31212330113 its reverse (31103321213), we get a palindrome (62315651326).

The spelling of 31212330113 in words is "thirty-one billion, two hundred twelve million, three hundred thirty thousand, one hundred thirteen".