121526313 has 4 divisors (see below), whose sum is σ = 162035088. Its totient is φ = 81017540.

The previous prime is 121526311. The next prime is 121526347. The reversal of 121526313 is 313625121.

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.

It is a cyclic number.

It is not a de Polignac number, because 121526313 - 2¹ = 121526311 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (121526311) 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, 20254383 + ... + 20254388.

It is an arithmetic number, because the mean of its divisors is an integer number (40508772).

Almost surely, 2^121526313 is an apocalyptic number.

It is an amenable number.

121526313 is a deficient number, since it is larger than the sum of its proper divisors (40508775).

121526313 is an equidigital number, since it uses as much as digits as its factorization.

121526313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40508774.

The product of its digits is 1080, while the sum is 24.

The square root of 121526313 is about 11023.8973598270. The cubic root of 121526313 is about 495.3248393261.

The spelling of 121526313 in words is "one hundred twenty-one million, five hundred twenty-six thousand, three hundred thirteen".