13012020312 has 64 divisors (see below), whose sum is σ = 33267386880. Its totient is φ = 4239280512.

The previous prime is 13012020311. The next prime is 13012020313. The reversal of 13012020312 is 21302021031.

It is an interprime number because it is at equal distance from previous prime (13012020311) and next prime (13012020313).

It is a junction number, because it is equal to n+sod(n) for n = 13012020291 and 13012020300.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13012020311) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 864483 + ... + 879405.

It is an arithmetic number, because the mean of its divisors is an integer number (519802920).

Almost surely, 2^13012020312 is an apocalyptic number.

13012020312 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 13012020312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16633693440).

13012020312 is an abundant number, since it is smaller than the sum of its proper divisors (20255366568).

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

13012020312 is a wasteful number, since it uses less digits than its factorization.

13012020312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15752 (or 15748 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 15.

Adding to 13012020312 its reverse (21302021031), we get a palindrome (34314041343).

The spelling of 13012020312 in words is "thirteen billion, twelve million, twenty thousand, three hundred twelve".