31141423533509 has 4 divisors (see below), whose sum is σ = 31339776549804. Its totient is φ = 30943070517216.

The previous prime is 31141423533433. The next prime is 31141423533529. The reversal of 31141423533509 is 90533532414113.

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 5062936509409 + 26078487024100 = 2250097^2 + 5106710^2 .

It is a cyclic number.

It is not a de Polignac number, because 31141423533509 - 2²⁴ = 31141406756293 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 31141423533509.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31141423533529) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 99176507912 + ... + 99176508225.

It is an arithmetic number, because the mean of its divisors is an integer number (7834944137451).

Almost surely, 2^{31141423533509} is an apocalyptic number.

It is an amenable number.

31141423533509 is a deficient number, since it is larger than the sum of its proper divisors (198353016295).

31141423533509 is a wasteful number, since it uses less digits than its factorization.

31141423533509 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 198353016294.

The product of its (nonzero) digits is 583200, while the sum is 44.

The spelling of 31141423533509 in words is "thirty-one trillion, one hundred forty-one billion, four hundred twenty-three million, five hundred thirty-three thousand, five hundred nine".