31332004144 has 120 divisors (see below), whose sum is σ = 73810275840. Its totient is φ = 12830404608.

The previous prime is 31332004133. The next prime is 31332004157. The reversal of 31332004144 is 44140023313.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2198289 + ... + 2212495.

It is an arithmetic number, because the mean of its divisors is an integer number (615085632).

Almost surely, 2^31332004144 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 31332004144, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (36905137920).

31332004144 is an abundant number, since it is smaller than the sum of its proper divisors (42478271696).

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

31332004144 is a wasteful number, since it uses less digits than its factorization.

31332004144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14355 (or 14342 counting only the distinct ones).

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

Adding to 31332004144 its reverse (44140023313), we get a palindrome (75472027457).

The spelling of 31332004144 in words is "thirty-one billion, three hundred thirty-two million, four thousand, one hundred forty-four".