31420330144 has 48 divisors (see below), whose sum is σ = 72606457728. Its totient is φ = 13101910272.

The previous prime is 31420330127. The next prime is 31420330157. The reversal of 31420330144 is 44103302413.

It is an unprimeable number.

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 in 7 ways as a sum of consecutive naturals, for example, 1887244 + ... + 1903819.

It is an arithmetic number, because the mean of its divisors is an integer number (1512634536).

Almost surely, 2^31420330144 is an apocalyptic number.

It is an amenable number.

31420330144 is an abundant number, since it is smaller than the sum of its proper divisors (41186127584).

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

31420330144 is a wasteful number, since it uses less digits than its factorization.

31420330144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3791117 (or 3791109 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 25.

Adding to 31420330144 its reverse (44103302413), we get a palindrome (75523632557).

The spelling of 31420330144 in words is "thirty-one billion, four hundred twenty million, three hundred thirty thousand, one hundred forty-four".