13154320311031 has 4 divisors (see below), whose sum is σ = 13846652959000. Its totient is φ = 12461987663064.

The previous prime is 13154320310959. The next prime is 13154320311071. The reversal of 13154320311031 is 13011302345131.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 13154320311031 - 2⁷ = 13154320310903 is a prime.

It is a super-3 number, since 3×13154320311031³ (a number of 40 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13154320311071) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 346166323956 + ... + 346166323993.

It is an arithmetic number, because the mean of its divisors is an integer number (3461663239750).

Almost surely, 2^{13154320311031} is an apocalyptic number.

13154320311031 is a deficient number, since it is larger than the sum of its proper divisors (692332647969).

13154320311031 is an equidigital number, since it uses as much as digits as its factorization.

13154320311031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 692332647968.

The product of its (nonzero) digits is 3240, while the sum is 28.

Adding to 13154320311031 its reverse (13011302345131), we get a palindrome (26165622656162).

The spelling of 13154320311031 in words is "thirteen trillion, one hundred fifty-four billion, three hundred twenty million, three hundred eleven thousand, thirty-one".