12990523 has 24 divisors (see below), whose sum is σ = 16396800. Its totient is φ = 10075104.

The previous prime is 12990503. The next prime is 12990541. The reversal of 12990523 is 32509921.

12990523 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 12990523 - 2⁵ = 12990491 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12990503) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 93388 + ... + 93526.

It is an arithmetic number, because the mean of its divisors is an integer number (683200).

Almost surely, 2^12990523 is an apocalyptic number.

12990523 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

12990523 is a deficient number, since it is larger than the sum of its proper divisors (3406277).

12990523 is a wasteful number, since it uses less digits than its factorization.

12990523 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 251 (or 238 counting only the distinct ones).

The product of its (nonzero) digits is 4860, while the sum is 31.

The square root of 12990523 is about 3604.2368124195. The cubic root of 12990523 is about 235.0763174491.

The spelling of 12990523 in words is "twelve million, nine hundred ninety thousand, five hundred twenty-three".