31445102243543 has 16 divisors (see below), whose sum is σ = 34447714123680. Its totient is φ = 28570874981376.

The previous prime is 31445102243531. The next prime is 31445102243551. The reversal of 31445102243543 is 34534220154413.

It is a cyclic number.

It is not a de Polignac number, because 31445102243543 - 2¹⁴ = 31445102227159 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 31445102243543.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31445102243563) 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 15 ways as a sum of consecutive naturals, for example, 905321 + ... + 7981842.

It is an arithmetic number, because the mean of its divisors is an integer number (2152982132730).

Almost surely, 2^{31445102243543} is an apocalyptic number.

31445102243543 is a deficient number, since it is larger than the sum of its proper divisors (3002611880137).

31445102243543 is a wasteful number, since it uses less digits than its factorization.

31445102243543 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8894386.

The product of its (nonzero) digits is 691200, while the sum is 41.

Adding to 31445102243543 its reverse (34534220154413), we get a palindrome (65979322397956).

The spelling of 31445102243543 in words is "thirty-one trillion, four hundred forty-five billion, one hundred two million, two hundred forty-three thousand, five hundred forty-three".