131233523 has 8 divisors (see below), whose sum is σ = 141309360. Its totient is φ = 121419520.

The previous prime is 131233517. The next prime is 131233537. The reversal of 131233523 is 325332131.

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 131233523 - 2¹⁰ = 131232499 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (131233723) 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, 64418 + ... + 66423.

It is an arithmetic number, because the mean of its divisors is an integer number (17663670).

Almost surely, 2^131233523 is an apocalyptic number.

131233523 is a deficient number, since it is larger than the sum of its proper divisors (10075837).

131233523 is a wasteful number, since it uses less digits than its factorization.

131233523 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 130917.

The product of its digits is 1620, while the sum is 23.

The square root of 131233523 is about 11455.7200995834. The cubic root of 131233523 is about 508.1769112790.

Adding to 131233523 its reverse (325332131), we get a palindrome (456565654).

The spelling of 131233523 in words is "one hundred thirty-one million, two hundred thirty-three thousand, five hundred twenty-three".