1712131217 has 8 divisors (see below), whose sum is σ = 1813238856. Its totient is φ = 1611067392.

The previous prime is 1712131171. The next prime is 1712131237. The reversal of 1712131217 is 7121312171.

It can be written as a sum of positive squares in 4 ways, for example, as 388917841 + 1323213376 = 19721^2 + 36376^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1712131217 - 2¹² = 1712127121 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1712131237) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 104153 + ... + 119465.

It is an arithmetic number, because the mean of its divisors is an integer number (226654857).

Almost surely, 2^1712131217 is an apocalyptic number.

1712131217 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

It is an amenable number.

1712131217 is a deficient number, since it is larger than the sum of its proper divisors (101107639).

1712131217 is a wasteful number, since it uses less digits than its factorization.

1712131217 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21907.

The product of its digits is 588, while the sum is 26.

The square root of 1712131217 is about 41377.9073540458. The cubic root of 1712131217 is about 1196.3153684234.

Adding to 1712131217 its reverse (7121312171), we get a palindrome (8833443388).

The spelling of 1712131217 in words is "one billion, seven hundred twelve million, one hundred thirty-one thousand, two hundred seventeen".