13440013131 has 32 divisors (see below), whose sum is σ = 18815040000. Its totient is φ = 8517510144.

The previous prime is 13440013129. The next prime is 13440013201. The reversal of 13440013131 is 13131004431.

It is not a de Polignac number, because 13440013131 - 2¹ = 13440013129 is a prime.

It is a super-2 number, since 2×13440013131² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 13440013098 and 13440013107.

It is not an unprimeable number, because it can be changed into a prime (13440013031) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 10759995 + ... + 10761243.

It is an arithmetic number, because the mean of its divisors is an integer number (587970000).

Almost surely, 2^13440013131 is an apocalyptic number.

13440013131 is a deficient number, since it is larger than the sum of its proper divisors (5375026869).

13440013131 is a wasteful number, since it uses less digits than its factorization.

13440013131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2115.

The product of its (nonzero) digits is 432, while the sum is 21.

Adding to 13440013131 its reverse (13131004431), we get a palindrome (26571017562).

The spelling of 13440013131 in words is "thirteen billion, four hundred forty million, thirteen thousand, one hundred thirty-one".