31225127716717 has 4 divisors (see below), whose sum is σ = 34063775690976. Its totient is φ = 28386479742460.

The previous prime is 31225127716703. The next prime is 31225127716729. The reversal of 31225127716717 is 71761772152213.

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.

It is a cyclic number.

It is not a de Polignac number, because 31225127716717 - 2¹⁵ = 31225127683949 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31225127710717) by changing a digit.

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, 1419323987113 + ... + 1419323987134.

It is an arithmetic number, because the mean of its divisors is an integer number (8515943922744).

Almost surely, 2^{31225127716717} is an apocalyptic number.

It is an amenable number.

31225127716717 is a deficient number, since it is larger than the sum of its proper divisors (2838647974259).

31225127716717 is a wasteful number, since it uses less digits than its factorization.

31225127716717 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2838647974258.

The product of its digits is 1728720, while the sum is 52.

The spelling of 31225127716717 in words is "thirty-one trillion, two hundred twenty-five billion, one hundred twenty-seven million, seven hundred sixteen thousand, seven hundred seventeen".