31144430004 has 24 divisors (see below), whose sum is σ = 74442785088. Its totient is φ = 10128269760.

The previous prime is 31144429951. The next prime is 31144430017. The reversal of 31144430004 is 40003444113.

It is a congruent number.

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, 31650352 + ... + 31651335.

It is an arithmetic number, because the mean of its divisors is an integer number (3101782712).

Almost surely, 2^31144430004 is an apocalyptic number.

It is an amenable number.

31144430004 is an abundant number, since it is smaller than the sum of its proper divisors (43298355084).

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

31144430004 is a wasteful number, since it uses less digits than its factorization.

31144430004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63301735 (or 63301733 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 24.

Adding to 31144430004 its reverse (40003444113), we get a palindrome (71147874117).

The spelling of 31144430004 in words is "thirty-one billion, one hundred forty-four million, four hundred thirty thousand, four".