31320104134443 has 4 divisors (see below), whose sum is σ = 41760138845928. Its totient is φ = 20880069422960.

The previous prime is 31320104134409. The next prime is 31320104134457. The reversal of 31320104134443 is 34443140102313.

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

It is a cyclic number.

It is not a de Polignac number, because 31320104134443 - 2¹³ = 31320104126251 is a prime.

It is not an unprimeable number, because it can be changed into a prime (31320104134463) 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, 5220017355738 + ... + 5220017355743.

It is an arithmetic number, because the mean of its divisors is an integer number (10440034711482).

Almost surely, 2^{31320104134443} is an apocalyptic number.

31320104134443 is a deficient number, since it is larger than the sum of its proper divisors (10440034711485).

31320104134443 is a wasteful number, since it uses less digits than its factorization.

31320104134443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10440034711484.

The product of its (nonzero) digits is 41472, while the sum is 33.

Adding to 31320104134443 its reverse (34443140102313), we get a palindrome (65763244236756).

The spelling of 31320104134443 in words is "thirty-one trillion, three hundred twenty billion, one hundred four million, one hundred thirty-four thousand, four hundred forty-three".