31071998055361 has 8 divisors (see below), whose sum is σ = 31745009152424. Its totient is φ = 30404265477120.

The previous prime is 31071998055331. The next prime is 31071998055389. The reversal of 31071998055361 is 16355089917013.

It can be written as a sum of positive squares in 4 ways, for example, as 16121126961 + 31055876928400 = 126969^2 + 5572780^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 31071998055361 - 2³¹ = 31069850571713 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 31071998055296 and 31071998055305.

It is not an unprimeable number, because it can be changed into a prime (31071998055311) 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, 1319617806 + ... + 1319641351.

It is an arithmetic number, because the mean of its divisors is an integer number (3968126144053).

Almost surely, 2^{31071998055361} is an apocalyptic number.

It is an amenable number.

31071998055361 is a deficient number, since it is larger than the sum of its proper divisors (673011097063).

31071998055361 is a wasteful number, since it uses less digits than its factorization.

31071998055361 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2639259411.

The product of its (nonzero) digits is 6123600, while the sum is 58.

The spelling of 31071998055361 in words is "thirty-one trillion, seventy-one billion, nine hundred ninety-eight million, fifty-five thousand, three hundred sixty-one".