31648129144 has 16 divisors (see below), whose sum is σ = 59348844720. Its totient is φ = 15821770560.

The previous prime is 31648129127. The next prime is 31648129147. The reversal of 31648129144 is 44192184613.

It is a self number, because there is not a number n which added to its sum of digits gives 31648129144.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31648129147) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 227397 + ... + 339124.

It is an arithmetic number, because the mean of its divisors is an integer number (3709302795).

Almost surely, 2^31648129144 is an apocalyptic number.

It is an amenable number.

31648129144 is a deficient number, since it is larger than the sum of its proper divisors (27700715576).

31648129144 is a wasteful number, since it uses less digits than its factorization.

31648129144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 573510 (or 573506 counting only the distinct ones).

The product of its digits is 165888, while the sum is 43.

The spelling of 31648129144 in words is "thirty-one billion, six hundred forty-eight million, one hundred twenty-nine thousand, one hundred forty-four".