13523231045 has 4 divisors (see below), whose sum is σ = 16227877260. Its totient is φ = 10818584832.

The previous prime is 13523231027. The next prime is 13523231063. The reversal of 13523231045 is 54013232531.

It is a happy number.

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

It is an interprime number because it is at equal distance from previous prime (13523231027) and next prime (13523231063).

It can be written as a sum of positive squares in 2 ways, for example, as 9964631329 + 3558599716 = 99823^2 + 59654^2 .

It is a cyclic number.

It is not a de Polignac number, because 13523231045 - 2⁸ = 13523230789 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 13523230999 and 13523231017.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1352323100 + ... + 1352323109.

It is an arithmetic number, because the mean of its divisors is an integer number (4056969315).

Almost surely, 2^13523231045 is an apocalyptic number.

It is an amenable number.

13523231045 is a deficient number, since it is larger than the sum of its proper divisors (2704646215).

13523231045 is an equidigital number, since it uses as much as digits as its factorization.

13523231045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2704646214.

The product of its (nonzero) digits is 10800, while the sum is 29.

Adding to 13523231045 its reverse (54013232531), we get a palindrome (67536463576).

The spelling of 13523231045 in words is "thirteen billion, five hundred twenty-three million, two hundred thirty-one thousand, forty-five".