31330113221309 has 8 divisors (see below), whose sum is σ = 36536575185600. Its totient is φ = 26854382760828.

The previous prime is 31330113221293. The next prime is 31330113221311. The reversal of 31330113221309 is 90312231103313.

It is not a de Polignac number, because 31330113221309 - 2⁴ = 31330113221293 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31330113221009) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 45670718639 + ... + 45670719324.

It is an arithmetic number, because the mean of its divisors is an integer number (4567071898200).

Almost surely, 2^{31330113221309} is an apocalyptic number.

It is an amenable number.

31330113221309 is a deficient number, since it is larger than the sum of its proper divisors (5206461964291).

31330113221309 is an frugal number, since it uses more digits than its factorization.

31330113221309 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 91341437984 (or 91341437970 counting only the distinct ones).

The product of its (nonzero) digits is 8748, while the sum is 32.

The spelling of 31330113221309 in words is "thirty-one trillion, three hundred thirty billion, one hundred thirteen million, two hundred twenty-one thousand, three hundred nine".