121310313 has 8 divisors (see below), whose sum is σ = 164488800. Its totient is φ = 79502688.

The previous prime is 121310311. The next prime is 121310327. The reversal of 121310313 is 313013121.

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

It is not a de Polignac number, because 121310313 - 2¹ = 121310311 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 121310292 and 121310301.

It is not an unprimeable number, because it can be changed into a prime (121310311) 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, 342508 + ... + 342861.

It is an arithmetic number, because the mean of its divisors is an integer number (20561100).

Almost surely, 2^121310313 is an apocalyptic number.

It is an amenable number.

121310313 is a deficient number, since it is larger than the sum of its proper divisors (43178487).

121310313 is an equidigital number, since it uses as much as digits as its factorization.

121310313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 685431.

The product of its (nonzero) digits is 54, while the sum is 15.

The square root of 121310313 is about 11014.0961045380. The cubic root of 121310313 is about 495.0312030121.

Adding to 121310313 its reverse (313013121), we get a palindrome (434323434).

The spelling of 121310313 in words is "one hundred twenty-one million, three hundred ten thousand, three hundred thirteen".