31421704044 has 96 divisors (see below), whose sum is σ = 80381246400. Its totient is φ = 9509068800.

The previous prime is 31421704009. The next prime is 31421704049. The reversal of 31421704044 is 44040712413.

It is not an unprimeable number, because it can be changed into a prime (31421704049) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 9517194 + ... + 9520494.

It is an arithmetic number, because the mean of its divisors is an integer number (837304650).

Almost surely, 2^31421704044 is an apocalyptic number.

31421704044 is a gapful number since it is divisible by the number (34) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 31421704044, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (40190623200).

31421704044 is an abundant number, since it is smaller than the sum of its proper divisors (48959542356).

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

31421704044 is a wasteful number, since it uses less digits than its factorization.

31421704044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4963 (or 4961 counting only the distinct ones).

The product of its (nonzero) digits is 10752, while the sum is 30.

The spelling of 31421704044 in words is "thirty-one billion, four hundred twenty-one million, seven hundred four thousand, forty-four".