13322311540 has 24 divisors (see below), whose sum is σ = 27991290600. Its totient is φ = 5326174848.

The previous prime is 13322311531. The next prime is 13322311549. The reversal of 13322311540 is 4511322331.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (13322311531) and next prime (13322311549).

It can be written as a sum of positive squares in 4 ways, for example, as 894967056 + 12427344484 = 29916^2 + 111478^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13322311549) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 131907 + ... + 209866.

It is an arithmetic number, because the mean of its divisors is an integer number (1166303775).

Almost surely, 2^13322311540 is an apocalyptic number.

13322311540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13322311540 is an abundant number, since it is smaller than the sum of its proper divisors (14668979060).

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

13322311540 is a wasteful number, since it uses less digits than its factorization.

13322311540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 343731 (or 343729 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 25.

Adding to 13322311540 its reverse (4511322331), we get a palindrome (17833633871).

The spelling of 13322311540 in words is "thirteen billion, three hundred twenty-two million, three hundred eleven thousand, five hundred forty".