12132013 has 4 divisors (see below), whose sum is σ = 12770560. Its totient is φ = 11493468.

The previous prime is 12132011. The next prime is 12132047. The reversal of 12132013 is 31023121.

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, and also an emirpimes, since its reverse is a distinct semiprime: 31023121 = 1913 ⋅16217.

It is a cyclic number.

It is not a de Polignac number, because 12132013 - 2¹ = 12132011 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12131984 and 12132002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12132011) 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, 319245 + ... + 319282.

It is an arithmetic number, because the mean of its divisors is an integer number (3192640).

Almost surely, 2^12132013 is an apocalyptic number.

It is an amenable number.

12132013 is a deficient number, since it is larger than the sum of its proper divisors (638547).

12132013 is an equidigital number, since it uses as much as digits as its factorization.

12132013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 638546.

The product of its (nonzero) digits is 36, while the sum is 13.

The square root of 12132013 is about 3483.1039318401. The cubic root of 12132013 is about 229.7793283587.

Adding to 12132013 its reverse (31023121), we get a palindrome (43155134).

The spelling of 12132013 in words is "twelve million, one hundred thirty-two thousand, thirteen".