13400135031 has 4 divisors (see below), whose sum is σ = 17866846712. Its totient is φ = 8933423352.

The previous prime is 13400135027. The next prime is 13400135033. The reversal of 13400135031 is 13053100431.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 13400135031 - 2² = 13400135027 is a prime.

It is a super-2 number, since 2×13400135031² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 13400134989 and 13400135007.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13400135033) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2233355836 + ... + 2233355841.

It is an arithmetic number, because the mean of its divisors is an integer number (4466711678).

Almost surely, 2^13400135031 is an apocalyptic number.

13400135031 is a deficient number, since it is larger than the sum of its proper divisors (4466711681).

13400135031 is an equidigital number, since it uses as much as digits as its factorization.

13400135031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4466711680.

The product of its (nonzero) digits is 540, while the sum is 21.

Adding to 13400135031 its reverse (13053100431), we get a palindrome (26453235462).

The spelling of 13400135031 in words is "thirteen billion, four hundred million, one hundred thirty-five thousand, thirty-one".