31617314604719 has 4 divisors (see below), whose sum is σ = 32290023426144. Its totient is φ = 30944605783296.

The previous prime is 31617314604683. The next prime is 31617314604787. The reversal of 31617314604719 is 91740641371613.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-31617314604719 is a prime.

It is a super-2 number, since 2×31617314604719² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31617314604919) 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, 336354410642 + ... + 336354410735.

It is an arithmetic number, because the mean of its divisors is an integer number (8072505856536).

Almost surely, 2^{31617314604719} is an apocalyptic number.

31617314604719 is a deficient number, since it is larger than the sum of its proper divisors (672708821425).

31617314604719 is an equidigital number, since it uses as much as digits as its factorization.

31617314604719 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 672708821424.

The product of its (nonzero) digits is 2286144, while the sum is 53.

The spelling of 31617314604719 in words is "thirty-one trillion, six hundred seventeen billion, three hundred fourteen million, six hundred four thousand, seven hundred nineteen".