13131304040 has 32 divisors (see below), whose sum is σ = 29625972480. Its totient is φ = 5238203712.

The previous prime is 13131304027. The next prime is 13131304061. The reversal of 13131304040 is 4040313131.

It is a super-2 number, since 2×13131304040² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 432572 + ... + 461931.

It is an arithmetic number, because the mean of its divisors is an integer number (925811640).

Almost surely, 2^13131304040 is an apocalyptic number.

13131304040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13131304040 is an abundant number, since it is smaller than the sum of its proper divisors (16494668440).

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

13131304040 is a wasteful number, since it uses less digits than its factorization.

13131304040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 894881 (or 894877 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 13131304040 its reverse (4040313131), we get a palindrome (17171617171).

Subtracting from 13131304040 its reverse (4040313131), we obtain a palindrome (9090990909).

The spelling of 13131304040 in words is "thirteen billion, one hundred thirty-one million, three hundred four thousand, forty".