131513123 has 8 divisors (see below), whose sum is σ = 150408960. Its totient is φ = 112644360.

The previous prime is 131513111. The next prime is 131513141. The reversal of 131513123 is 321315131.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 131513123 - 2¹⁰ = 131512099 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 131513095 and 131513104.

It is not an unprimeable number, because it can be changed into a prime (131513143) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5018 + ... + 16976.

It is an arithmetic number, because the mean of its divisors is an integer number (18801120).

Almost surely, 2^131513123 is an apocalyptic number.

131513123 is a deficient number, since it is larger than the sum of its proper divisors (18895837).

131513123 is a wasteful number, since it uses less digits than its factorization.

131513123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13537.

The product of its digits is 270, while the sum is 20.

The square root of 131513123 is about 11467.9171168962. The cubic root of 131513123 is about 508.5375545887.

Adding to 131513123 its reverse (321315131), we get a palindrome (452828254).

The spelling of 131513123 in words is "one hundred thirty-one million, five hundred thirteen thousand, one hundred twenty-three".