13123315131 has 16 divisors (see below), whose sum is σ = 17763300000. Its totient is φ = 8616869888.

The previous prime is 13123315111. The next prime is 13123315159. The reversal of 13123315131 is 13151332131.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 13123315131 - 2¹⁵ = 13123282363 is a prime.

It is a super-2 number, since 2×13123315131² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (13123315111) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 27006 + ... + 164243.

It is an arithmetic number, because the mean of its divisors is an integer number (1110206250).

Almost surely, 2^13123315131 is an apocalyptic number.

13123315131 is a deficient number, since it is larger than the sum of its proper divisors (4639984869).

13123315131 is a wasteful number, since it uses less digits than its factorization.

13123315131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 191598.

The product of its digits is 810, while the sum is 24.

Adding to 13123315131 its reverse (13151332131), we get a palindrome (26274647262).

The spelling of 13123315131 in words is "thirteen billion, one hundred twenty-three million, three hundred fifteen thousand, one hundred thirty-one".