313202121 has 8 divisors (see below), whose sum is σ = 424449024. Its totient is φ = 205378320.

The previous prime is 313202119. The next prime is 313202147. The reversal of 313202121 is 121202313.

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

It is not a de Polignac number, because 313202121 - 2¹ = 313202119 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 313202121.

It is not an unprimeable number, because it can be changed into a prime (313202171) 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, 855561 + ... + 855926.

It is an arithmetic number, because the mean of its divisors is an integer number (53056128).

Almost surely, 2^313202121 is an apocalyptic number.

It is an amenable number.

313202121 is a deficient number, since it is larger than the sum of its proper divisors (111246903).

313202121 is a wasteful number, since it uses less digits than its factorization.

313202121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1711551.

The product of its (nonzero) digits is 72, while the sum is 15.

The square root of 313202121 is about 17697.5173682638. The cubic root of 313202121 is about 679.1122505605.

Adding to 313202121 its reverse (121202313), we get a palindrome (434404434).

The spelling of 313202121 in words is "three hundred thirteen million, two hundred two thousand, one hundred twenty-one".