31443334042541 has 4 divisors (see below), whose sum is σ = 31452988124412. Its totient is φ = 31433679960672.

The previous prime is 31443334042531. The next prime is 31443334042567. The reversal of 31443334042541 is 14524043334413.

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

It can be written as a sum of positive squares in 2 ways, for example, as 27815181480100 + 3628152562441 = 5274010^2 + 1904771^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-31443334042541 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 (31443334042531) 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, 4827036050 + ... + 4827042563.

It is an arithmetic number, because the mean of its divisors is an integer number (7863247031103).

Almost surely, 2^{31443334042541} is an apocalyptic number.

It is an amenable number.

31443334042541 is a deficient number, since it is larger than the sum of its proper divisors (9654081871).

31443334042541 is an equidigital number, since it uses as much as digits as its factorization.

31443334042541 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9654081870.

The product of its (nonzero) digits is 829440, while the sum is 41.

Adding to 31443334042541 its reverse (14524043334413), we get a palindrome (45967377376954).

The spelling of 31443334042541 in words is "thirty-one trillion, four hundred forty-three billion, three hundred thirty-four million, forty-two thousand, five hundred forty-one".