13253404123 has 4 divisors (see below), whose sum is σ = 13384626048. Its totient is φ = 13122182200.

The previous prime is 13253404121. The next prime is 13253404139. The reversal of 13253404123 is 32140435231.

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 13253404123 - 2¹ = 13253404121 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 13253404091 and 13253404100.

It is not an unprimeable number, because it can be changed into a prime (13253404121) 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, 65610811 + ... + 65611012.

It is an arithmetic number, because the mean of its divisors is an integer number (3346156512).

Almost surely, 2^13253404123 is an apocalyptic number.

13253404123 is a deficient number, since it is larger than the sum of its proper divisors (131221925).

13253404123 is a wasteful number, since it uses less digits than its factorization.

13253404123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 131221924.

The product of its (nonzero) digits is 8640, while the sum is 28.

Adding to 13253404123 its reverse (32140435231), we get a palindrome (45393839354).

The spelling of 13253404123 in words is "thirteen billion, two hundred fifty-three million, four hundred four thousand, one hundred twenty-three".