13551244031 has 4 divisors (see below), whose sum is σ = 14593647432. Its totient is φ = 12508840632.

The previous prime is 13551244019. The next prime is 13551244061. The reversal of 13551244031 is 13044215531.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 13044215531 = 13859 ⋅941209.

It is a cyclic number.

It is not a de Polignac number, because 13551244031 - 2²⁶ = 13484135167 is a prime.

It is a super-2 number, since 2×13551244031² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 13551243985 and 13551244003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13551244061) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 521201681 + ... + 521201706.

It is an arithmetic number, because the mean of its divisors is an integer number (3648411858).

Almost surely, 2^13551244031 is an apocalyptic number.

13551244031 is a deficient number, since it is larger than the sum of its proper divisors (1042403401).

13551244031 is a wasteful number, since it uses less digits than its factorization.

13551244031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1042403400.

The product of its (nonzero) digits is 7200, while the sum is 29.

Adding to 13551244031 its reverse (13044215531), we get a palindrome (26595459562).

The spelling of 13551244031 in words is "thirteen billion, five hundred fifty-one million, two hundred forty-four thousand, thirty-one".