31163900089 has 9 divisors (see below), whose sum is σ = 36253321317. Its totient is φ = 26710855164.

The previous prime is 31163900083. The next prime is 31163900107. The reversal of 31163900089 is 98000936113.

The square root of 31163900089 is 176533.

It is a perfect power (a square), and thus also a powerful number.

It is not a de Polignac number, because 31163900089 - 2¹⁵ = 31163867321 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31163900083) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 1223122 + ... + 1248340.

It is an arithmetic number, because the mean of its divisors is an integer number (4028146813).

Almost surely, 2^31163900089 is an apocalyptic number.

31163900089 is the 176533-rd square number.

31163900089 is the 88267-th centered octagonal number.

It is an amenable number.

31163900089 is a deficient number, since it is larger than the sum of its proper divisors (5089421228).

31163900089 is an frugal number, since it uses more digits than its factorization.

31163900089 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50452 (or 25226 counting only the distinct ones).

The product of its (nonzero) digits is 34992, while the sum is 40.

The spelling of 31163900089 in words is "thirty-one billion, one hundred sixty-three million, nine hundred thousand, eighty-nine".