31143003144 has 32 divisors (see below), whose sum is σ = 84935463840. Its totient is φ = 9437273600.

The previous prime is 31143003139. The next prime is 31143003247. The reversal of 31143003144 is 44130034113.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 58982697 + ... + 58983224.

It is an arithmetic number, because the mean of its divisors is an integer number (2654233245).

Almost surely, 2^31143003144 is an apocalyptic number.

It is an amenable number.

31143003144 is an abundant number, since it is smaller than the sum of its proper divisors (53792460696).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

31143003144 is a wasteful number, since it uses less digits than its factorization.

31143003144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 117965941 (or 117965937 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 24.

Adding to 31143003144 its reverse (44130034113), we get a palindrome (75273037257).

The spelling of 31143003144 in words is "thirty-one billion, one hundred forty-three million, three thousand, one hundred forty-four".