131224764 has 48 divisors (see below), whose sum is σ = 342187776. Its totient is φ = 38793600.

The previous prime is 131224763. The next prime is 131224783. The reversal of 131224764 is 467422131.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131224763) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6712 + ... + 17535.

It is an arithmetic number, because the mean of its divisors is an integer number (7128912).

Almost surely, 2^131224764 is an apocalyptic number.

It is an amenable number.

131224764 is an abundant number, since it is smaller than the sum of its proper divisors (210963012).

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

131224764 is a wasteful number, since it uses less digits than its factorization.

131224764 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24306 (or 24304 counting only the distinct ones).

The product of its digits is 8064, while the sum is 30.

The square root of 131224764 is about 11455.3377951067. The cubic root of 131224764 is about 508.1656051724.

Adding to 131224764 its reverse (467422131), we get a palindrome (598646895).

The spelling of 131224764 in words is "one hundred thirty-one million, two hundred twenty-four thousand, seven hundred sixty-four".