13012311040 has 88 divisors (see below), whose sum is σ = 31976137872. Its totient is φ = 5077893120.

The previous prime is 13012311023. The next prime is 13012311043. The reversal of 13012311040 is 4011321031.

It is a Harshad number since it is a multiple of its sum of digits (16).

It is a zygodrome in base 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13012311043) by changing a digit.

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, 178927 + ... + 240913.

Almost surely, 2^13012311040 is an apocalyptic number.

13012311040 is a gapful number since it is divisible by the number (10) 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 13012311040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15988068936).

13012311040 is an abundant number, since it is smaller than the sum of its proper divisors (18963826832).

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

13012311040 is an equidigital number, since it uses as much as digits as its factorization.

13012311040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62053 (or 62035 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 16.

Adding to 13012311040 its reverse (4011321031), we get a palindrome (17023632071).

Subtracting from 13012311040 its reverse (4011321031), we obtain a palindrome (9000990009).

The spelling of 13012311040 in words is "thirteen billion, twelve million, three hundred eleven thousand, forty".