121310523 has 12 divisors (see below), whose sum is σ = 175408480. Its totient is φ = 80789616.

The previous prime is 121310503. The next prime is 121310537. The reversal of 121310523 is 325013121.

121310523 is a `hidden beast` number, since 12 + 131 + 0 + 523 = 666.

It is not a de Polignac number, because 121310523 - 2¹⁰ = 121309499 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 121310496 and 121310505.

It is not an unprimeable number, because it can be changed into a prime (121310503) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2865 + ... + 15837.

Almost surely, 2^121310523 is an apocalyptic number.

121310523 is a deficient number, since it is larger than the sum of its proper divisors (54097957).

121310523 is a wasteful number, since it uses less digits than its factorization.

121310523 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14018 (or 14015 counting only the distinct ones).

The product of its (nonzero) digits is 180, while the sum is 18.

The square root of 121310523 is about 11014.1056377720. The cubic root of 121310523 is about 495.0314886611.

Adding to 121310523 its reverse (325013121), we get a palindrome (446323644).

The spelling of 121310523 in words is "one hundred twenty-one million, three hundred ten thousand, five hundred twenty-three".