31080416721 has 8 divisors (see below), whose sum is σ = 42222453120. Its totient is φ = 20329329072.

The previous prime is 31080416707. The next prime is 31080416723. The reversal of 31080416721 is 12761408013.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 31080416721 - 2¹⁰ = 31080415697 is a prime.

It is not an unprimeable number, because it can be changed into a prime (31080416723) 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 7 ways as a sum of consecutive naturals, for example, 97737001 + ... + 97737318.

It is an arithmetic number, because the mean of its divisors is an integer number (5277806640).

Almost surely, 2^31080416721 is an apocalyptic number.

It is an amenable number.

31080416721 is a deficient number, since it is larger than the sum of its proper divisors (11142036399).

31080416721 is a wasteful number, since it uses less digits than its factorization.

31080416721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 195474375.

The product of its (nonzero) digits is 8064, while the sum is 33.

The spelling of 31080416721 in words is "thirty-one billion, eighty million, four hundred sixteen thousand, seven hundred twenty-one".