131230536 has 16 divisors (see below), whose sum is σ = 328076400. Its totient is φ = 43743504.

The previous prime is 131230529. The next prime is 131230537. The reversal of 131230536 is 635032131.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (24), and also a Moran number because the ratio is a prime number: 5467939 = 131230536 / (1 + 3 + 1 + 2 + 3 + 0 + 5 + 3 + 6).

It is not an unprimeable number, because it can be changed into a prime (131230537) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2733946 + ... + 2733993.

It is an arithmetic number, because the mean of its divisors is an integer number (20504775).

Almost surely, 2^131230536 is an apocalyptic number.

It is an amenable number.

131230536 is an abundant number, since it is smaller than the sum of its proper divisors (196845864).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

131230536 is a wasteful number, since it uses less digits than its factorization.

131230536 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5467948 (or 5467944 counting only the distinct ones).

The product of its (nonzero) digits is 1620, while the sum is 24.

The square root of 131230536 is about 11455.5897272903. The cubic root of 131230536 is about 508.1730557196.

Adding to 131230536 its reverse (635032131), we get a palindrome (766262667).

The spelling of 131230536 in words is "one hundred thirty-one million, two hundred thirty thousand, five hundred thirty-six".