31312202114443 has 4 divisors (see below), whose sum is σ = 31511642892400. Its totient is φ = 31112761336488.

The previous prime is 31312202114359. The next prime is 31312202114477. The reversal of 31312202114443 is 34441120221313.

It is a happy number.

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-31312202114443 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31312203114443) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 99720388743 + ... + 99720389056.

It is an arithmetic number, because the mean of its divisors is an integer number (7877910723100).

Almost surely, 2^{31312202114443} is an apocalyptic number.

31312202114443 is a deficient number, since it is larger than the sum of its proper divisors (199440777957).

31312202114443 is a wasteful number, since it uses less digits than its factorization.

31312202114443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 199440777956.

The product of its (nonzero) digits is 13824, while the sum is 31.

Adding to 31312202114443 its reverse (34441120221313), we get a palindrome (65753322335756).

The spelling of 31312202114443 in words is "thirty-one trillion, three hundred twelve billion, two hundred two million, one hundred fourteen thousand, four hundred forty-three".