31113212101303 has 4 divisors (see below), whose sum is σ = 31415282121808. Its totient is φ = 30811142080800.

The previous prime is 31113212101291. The next prime is 31113212101343. The reversal of 31113212101303 is 30310121231113.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-31113212101303 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31113212101343) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 151035010098 + ... + 151035010303.

It is an arithmetic number, because the mean of its divisors is an integer number (7853820530452).

Almost surely, 2^{31113212101303} is an apocalyptic number.

31113212101303 is a deficient number, since it is larger than the sum of its proper divisors (302070020505).

31113212101303 is a wasteful number, since it uses less digits than its factorization.

31113212101303 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 302070020504.

The product of its (nonzero) digits is 324, while the sum is 22.

Adding to 31113212101303 its reverse (30310121231113), we get a palindrome (61423333332416).

The spelling of 31113212101303 in words is "thirty-one trillion, one hundred thirteen billion, two hundred twelve million, one hundred one thousand, three hundred three".