121317311 has 4 divisors (see below), whose sum is σ = 121380000. Its totient is φ = 121254624.

The previous prime is 121317307. The next prime is 121317331. The reversal of 121317311 is 113713121.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 121317311 - 2² = 121317307 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121317331) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 28346 + ... + 32343.

It is an arithmetic number, because the mean of its divisors is an integer number (30345000).

Almost surely, 2^121317311 is an apocalyptic number.

121317311 is a deficient number, since it is larger than the sum of its proper divisors (62689).

121317311 is an equidigital number, since it uses as much as digits as its factorization.

121317311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62688.

The product of its digits is 126, while the sum is 20.

The square root of 121317311 is about 11014.4137837653. The cubic root of 121317311 is about 495.0407217460.

The spelling of 121317311 in words is "one hundred twenty-one million, three hundred seventeen thousand, three hundred eleven".