31240411144 has 8 divisors (see below), whose sum is σ = 58575770910. Its totient is φ = 15620205568.

The previous prime is 31240411141. The next prime is 31240411159. The reversal of 31240411144 is 44111404213.

It can be written as a sum of positive squares in only one way, i.e., 25229510244 + 6010900900 = 158838^2 + 77530^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is not an unprimeable number, because it can be changed into a prime (31240411141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1952525689 + ... + 1952525704.

Almost surely, 2^31240411144 is an apocalyptic number.

It is an amenable number.

31240411144 is a deficient number, since it is larger than the sum of its proper divisors (27335359766).

31240411144 is a wasteful number, since it uses less digits than its factorization.

31240411144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3905051399 (or 3905051395 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 25.

Adding to 31240411144 its reverse (44111404213), we get a palindrome (75351815357).

The spelling of 31240411144 in words is "thirty-one billion, two hundred forty million, four hundred eleven thousand, one hundred forty-four".