13020312 has 32 divisors (see below), whose sum is σ = 32845680. Its totient is φ = 4300800.

The previous prime is 13020307. The next prime is 13020331. The reversal of 13020312 is 21302031.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 312 + ... + 5112.

Almost surely, 2^13020312 is an apocalyptic number.

13020312 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

13020312 is an abundant number, since it is smaller than the sum of its proper divisors (19825368).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

13020312 is a wasteful number, since it uses less digits than its factorization.

13020312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4923 (or 4919 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 12.

The square root of 13020312 is about 3608.3669436464. The cubic root of 13020312 is about 235.2558673803.

Adding to 13020312 its reverse (21302031), we get a palindrome (34322343).

It can be divided in two parts, 1302031 and 2, that multiplied together give a palindrome (2604062).

The spelling of 13020312 in words is "thirteen million, twenty thousand, three hundred twelve".