121342313 has 4 divisors (see below), whose sum is σ = 121377168. Its totient is φ = 121307460.

The previous prime is 121342307. The next prime is 121342327. The reversal of 121342313 is 313243121.

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, and also an emirpimes, since its reverse is a distinct semiprime: 313243121 = 379 ⋅826499.

It is a cyclic number.

It is not a de Polignac number, because 121342313 - 2¹⁰ = 121341289 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121342363) 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, 11543 + ... + 19388.

It is an arithmetic number, because the mean of its divisors is an integer number (30344292).

Almost surely, 2^121342313 is an apocalyptic number.

It is an amenable number.

121342313 is a deficient number, since it is larger than the sum of its proper divisors (34855).

121342313 is an equidigital number, since it uses as much as digits as its factorization.

121342313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34854.

The product of its digits is 432, while the sum is 20.

The square root of 121342313 is about 11015.5486926435. The cubic root of 121342313 is about 495.0747266704.

Adding to 121342313 its reverse (313243121), we get a palindrome (434585434).

The spelling of 121342313 in words is "one hundred twenty-one million, three hundred forty-two thousand, three hundred thirteen".