31241545542145 has 4 divisors (see below), whose sum is σ = 37489854650580. Its totient is φ = 24993236433712.

The previous prime is 31241545542107. The next prime is 31241545542203. The reversal of 31241545542145 is 54124554514213.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 3799914739569 + 27441630802576 = 1949337^2 + 5238476^2 .

It is a cyclic number.

It is not a de Polignac number, because 31241545542145 - 2⁷ = 31241545542017 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 31241545542095 and 31241545542104.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3124154554210 + ... + 3124154554219.

It is an arithmetic number, because the mean of its divisors is an integer number (9372463662645).

Almost surely, 2^{31241545542145} is an apocalyptic number.

It is an amenable number.

31241545542145 is a deficient number, since it is larger than the sum of its proper divisors (6248309108435).

31241545542145 is an equidigital number, since it uses as much as digits as its factorization.

31241545542145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6248309108434.

The product of its digits is 1920000, while the sum is 46.

The spelling of 31241545542145 in words is "thirty-one trillion, two hundred forty-one billion, five hundred forty-five million, five hundred forty-two thousand, one hundred forty-five".