121404313 has 2 divisors, whose sum is σ = 121404314. Its totient is φ = 121404312.

The previous prime is 121404301. The next prime is 121404347. The reversal of 121404313 is 313404121.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 119836809 + 1567504 = 10947^2 + 1252^2 .

It is a cyclic number.

It is not a de Polignac number, because 121404313 - 2¹⁷ = 121273241 is a prime.

It is not a weakly prime, because it can be changed into another prime (121404383) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60702156 + 60702157.

It is an arithmetic number, because the mean of its divisors is an integer number (60702157).

Almost surely, 2^121404313 is an apocalyptic number.

It is an amenable number.

121404313 is a deficient number, since it is larger than the sum of its proper divisors (1).

121404313 is an equidigital number, since it uses as much as digits as its factorization.

121404313 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 288, while the sum is 19.

The square root of 121404313 is about 11018.3625371468. The cubic root of 121404313 is about 495.1590319880.

Adding to 121404313 its reverse (313404121), we get a palindrome (434808434).

The spelling of 121404313 in words is "one hundred twenty-one million, four hundred four thousand, three hundred thirteen".