13131120003123 has 32 divisors (see below), whose sum is σ = 18483536059200. Its totient is φ = 8279297202176.

The previous prime is 13131120003097. The next prime is 13131120003137. The reversal of 13131120003123 is 32130002113131.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 13131120003123 - 2¹⁸ = 13131119740979 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 13131120003123.

It is not an unprimeable number, because it can be changed into a prime (13131120001123) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 537223 + ... + 5152751.

It is an arithmetic number, because the mean of its divisors is an integer number (577610501850).

Almost surely, 2^{13131120003123} is an apocalyptic number.

13131120003123 is a deficient number, since it is larger than the sum of its proper divisors (5352416056077).

13131120003123 is a wasteful number, since it uses less digits than its factorization.

13131120003123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4616231.

The product of its (nonzero) digits is 324, while the sum is 21.

Adding to 13131120003123 its reverse (32130002113131), we get a palindrome (45261122116254).

The spelling of 13131120003123 in words is "thirteen trillion, one hundred thirty-one billion, one hundred twenty million, three thousand, one hundred twenty-three".