131235230513 has 8 divisors (see below), whose sum is σ = 131716989768. Its totient is φ = 130754018304.

The previous prime is 131235230479. The next prime is 131235230527. The reversal of 131235230513 is 315032532131.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 44193709729 + 87041520784 = 210223^2 + 295028^2 .

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-131235230513 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (131235235513) 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, 347045 + ... + 618797.

It is an arithmetic number, because the mean of its divisors is an integer number (16464623721).

Almost surely, 2^131235230513 is an apocalyptic number.

It is an amenable number.

131235230513 is a deficient number, since it is larger than the sum of its proper divisors (481759255).

131235230513 is a wasteful number, since it uses less digits than its factorization.

131235230513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 273523.

The product of its (nonzero) digits is 8100, while the sum is 29.

Adding to 131235230513 its reverse (315032532131), we get a palindrome (446267762644).

The spelling of 131235230513 in words is "one hundred thirty-one billion, two hundred thirty-five million, two hundred thirty thousand, five hundred thirteen".