313212101 has 4 divisors (see below), whose sum is σ = 313768992. Its totient is φ = 312655212.

The previous prime is 313212077. The next prime is 313212227. The reversal of 313212101 is 101212313.

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 a de Polignac number, because none of the positive numbers 2^k-313212101 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (313212001) 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, 277601 + ... + 278726.

It is an arithmetic number, because the mean of its divisors is an integer number (78442248).

Almost surely, 2^313212101 is an apocalyptic number.

It is an amenable number.

313212101 is a deficient number, since it is larger than the sum of its proper divisors (556891).

313212101 is an equidigital number, since it uses as much as digits as its factorization.

313212101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 556890.

The product of its (nonzero) digits is 36, while the sum is 14.

The square root of 313212101 is about 17697.7993264699. The cubic root of 313212101 is about 679.1194636537.

Adding to 313212101 its reverse (101212313), we get a palindrome (414424414).

It can be divided in two parts, 313212 and 101, that added together give a palindrome (313313).

The spelling of 313212101 in words is "three hundred thirteen million, two hundred twelve thousand, one hundred one".