131234513 has 8 divisors (see below), whose sum is σ = 132464808. Its totient is φ = 130009984.

The previous prime is 131234503. The next prime is 131234531. The reversal of 131234513 is 315432131.

It can be written as a sum of positive squares in 4 ways, for example, as 200704 + 131033809 = 448^2 + 11447^2 .

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 131234513 - 2²² = 127040209 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (131234503) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 53645 + ... + 56037.

It is an arithmetic number, because the mean of its divisors is an integer number (16558101).

Almost surely, 2^131234513 is an apocalyptic number.

It is an amenable number.

131234513 is a deficient number, since it is larger than the sum of its proper divisors (1230295).

131234513 is a wasteful number, since it uses less digits than its factorization.

131234513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2883.

The product of its digits is 1080, while the sum is 23.

The square root of 131234513 is about 11455.7633093566. The cubic root of 131234513 is about 508.1781891382.

Adding to 131234513 its reverse (315432131), we get a palindrome (446666644).

The spelling of 131234513 in words is "one hundred thirty-one million, two hundred thirty-four thousand, five hundred thirteen".