121383523 has 2 divisors, whose sum is σ = 121383524. Its totient is φ = 121383522.

The previous prime is 121383503. The next prime is 121383527. The reversal of 121383523 is 325383121.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 121383523 - 2⁵ = 121383491 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 121383491 and 121383500.

It is not a weakly prime, because it can be changed into another prime (121383527) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60691761 + 60691762.

It is an arithmetic number, because the mean of its divisors is an integer number (60691762).

Almost surely, 2^121383523 is an apocalyptic number.

121383523 is a deficient number, since it is larger than the sum of its proper divisors (1).

121383523 is an equidigital number, since it uses as much as digits as its factorization.

121383523 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4320, while the sum is 28.

The square root of 121383523 is about 11017.4190716338. The cubic root of 121383523 is about 495.1307657106.

The spelling of 121383523 in words is "one hundred twenty-one million, three hundred eighty-three thousand, five hundred twenty-three".