31440201143 has 16 divisors (see below), whose sum is σ = 35419809600. Its totient is φ = 27706103040.

The previous prime is 31440201061. The next prime is 31440201161. The reversal of 31440201143 is 34110204413.

It is a cyclic number.

It is not a de Polignac number, because 31440201143 - 2¹⁴ = 31440184759 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 (31440201173) 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, 434963 + ... + 502068.

It is an arithmetic number, because the mean of its divisors is an integer number (2213738100).

Almost surely, 2^31440201143 is an apocalyptic number.

31440201143 is a deficient number, since it is larger than the sum of its proper divisors (3979608457).

31440201143 is a wasteful number, since it uses less digits than its factorization.

31440201143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 937162.

The product of its (nonzero) digits is 1152, while the sum is 23.

Adding to 31440201143 its reverse (34110204413), we get a palindrome (65550405556).

The spelling of 31440201143 in words is "thirty-one billion, four hundred forty million, two hundred one thousand, one hundred forty-three".