131224456 has 32 divisors (see below), whose sum is σ = 268894080. Its totient is φ = 59540800.

The previous prime is 131224441. The next prime is 131224463. The reversal of 131224456 is 654422131.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 69201 + ... + 71071.

It is an arithmetic number, because the mean of its divisors is an integer number (8402940).

Almost surely, 2^131224456 is an apocalyptic number.

It is an amenable number.

131224456 is an abundant number, since it is smaller than the sum of its proper divisors (137669624).

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

131224456 is a wasteful number, since it uses less digits than its factorization.

131224456 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2685 (or 2681 counting only the distinct ones).

The product of its digits is 5760, while the sum is 28.

The square root of 131224456 is about 11455.3243515843. The cubic root of 131224456 is about 508.1652075972.

Adding to 131224456 its reverse (654422131), we get a palindrome (785646587).

It can be divided in two parts, 13122 and 4456, that added together give a triangular number (17578 = T₁₈₇).

The spelling of 131224456 in words is "one hundred thirty-one million, two hundred twenty-four thousand, four hundred fifty-six".