121313 has 2 divisors, whose sum is σ = 121314. Its totient is φ = 121312.

The previous prime is 121309. The next prime is 121321. The reversal of 121313 is 313121.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 113569 + 7744 = 337^2 + 88^2 .

It is a cyclic number.

It is not a de Polignac number, because 121313 - 2² = 121309 is a prime.

It is an Ulam number.

It is a plaindrome in base 6.

It is a junction number, because it is equal to n+sod(n) for n = 121294 and 121303.

It is not a weakly prime, because it can be changed into another prime (121333) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60656 + 60657.

It is an arithmetic number, because the mean of its divisors is an integer number (60657).

2¹²¹³¹³ is an apocalyptic number.

It is an amenable number.

121313 is a deficient number, since it is larger than the sum of its proper divisors (1).

121313 is an equidigital number, since it uses as much as digits as its factorization.

121313 is an evil number, because the sum of its binary digits is even.

The product of its digits is 18, while the sum is 11.

The square root of 121313 is about 348.3001579098. The cubic root of 121313 is about 49.5034857934.

Adding to 121313 its reverse (313121), we get a palindrome (434434).

It can be divided in two parts, 121 and 313, that multiplied together give a palindrome (37873).

The spelling of 121313 in words is "one hundred twenty-one thousand, three hundred thirteen".