13403311320 has 64 divisors (see below), whose sum is σ = 45954213120. Its totient is φ = 3063613824.

The previous prime is 13403311291. The next prime is 13403311333. The reversal of 13403311320 is 2311330431.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7977322 + ... + 7979001.

It is an arithmetic number, because the mean of its divisors is an integer number (718034580).

Almost surely, 2^13403311320 is an apocalyptic number.

13403311320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13403311320 is an abundant number, since it is smaller than the sum of its proper divisors (32550901800).

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

13403311320 is a wasteful number, since it uses less digits than its factorization.

13403311320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15956344 (or 15956340 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 21.

Adding to 13403311320 its reverse (2311330431), we get a palindrome (15714641751).

The spelling of 13403311320 in words is "thirteen billion, four hundred three million, three hundred eleven thousand, three hundred twenty".