317212901 has 4 divisors (see below), whose sum is σ = 317459904. Its totient is φ = 316965900.

The previous prime is 317212891. The next prime is 317212913. The reversal of 317212901 is 109212713.

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: 109212713 = 151 ⋅723263.

It is a cyclic number.

It is not a de Polignac number, because 317212901 - 2⁶ = 317212837 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 (317212001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 121565 + ... + 124146.

It is an arithmetic number, because the mean of its divisors is an integer number (79364976).

Almost surely, 2^317212901 is an apocalyptic number.

It is an amenable number.

317212901 is a deficient number, since it is larger than the sum of its proper divisors (247003).

317212901 is a wasteful number, since it uses less digits than its factorization.

317212901 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 247002.

The product of its (nonzero) digits is 756, while the sum is 26.

The square root of 317212901 is about 17810.4716669717. The cubic root of 317212901 is about 681.9988053344.

The spelling of 317212901 in words is "three hundred seventeen million, two hundred twelve thousand, nine hundred one".