31082103317 has 4 divisors (see below), whose sum is σ = 31326844416. Its totient is φ = 30837362220.

The previous prime is 31082103281. The next prime is 31082103341. The reversal of 31082103317 is 71330128013.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 71330128013 = 96157 ⋅741809.

It is a cyclic number.

It is not a de Polignac number, because 31082103317 - 2⁶ = 31082103253 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 31082103317.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31082103347) 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, 122370359 + ... + 122370612.

It is an arithmetic number, because the mean of its divisors is an integer number (7831711104).

Almost surely, 2^31082103317 is an apocalyptic number.

It is an amenable number.

31082103317 is a deficient number, since it is larger than the sum of its proper divisors (244741099).

31082103317 is a wasteful number, since it uses less digits than its factorization.

31082103317 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 244741098.

The product of its (nonzero) digits is 3024, while the sum is 29.

The spelling of 31082103317 in words is "thirty-one billion, eighty-two million, one hundred three thousand, three hundred seventeen".