13501451231 has 4 divisors (see below), whose sum is σ = 13504345152. Its totient is φ = 13498557312.

The previous prime is 13501451137. The next prime is 13501451233. The reversal of 13501451231 is 13215410531.

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 13501451231 - 2¹⁸ = 13501189087 is a prime.

It is a super-2 number, since 2×13501451231² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 13501451231.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13501451233) 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, 1439951 + ... + 1449296.

It is an arithmetic number, because the mean of its divisors is an integer number (3376086288).

Almost surely, 2^13501451231 is an apocalyptic number.

13501451231 is a deficient number, since it is larger than the sum of its proper divisors (2893921).

13501451231 is an equidigital number, since it uses as much as digits as its factorization.

13501451231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2893920.

The product of its (nonzero) digits is 1800, while the sum is 26.

Adding to 13501451231 its reverse (13215410531), we get a palindrome (26716861762).

The spelling of 13501451231 in words is "thirteen billion, five hundred one million, four hundred fifty-one thousand, two hundred thirty-one".