131433424 has 10 divisors (see below), whose sum is σ = 254652290. Its totient is φ = 65716704.

The previous prime is 131433383. The next prime is 131433427. The reversal of 131433424 is 424334131.

It can be written as a sum of positive squares in only one way, i.e., 117505600 + 13927824 = 10840^2 + 3732^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131433427) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4107279 + ... + 4107310.

It is an arithmetic number, because the mean of its divisors is an integer number (25465229).

Almost surely, 2^131433424 is an apocalyptic number.

It is an amenable number.

131433424 is a deficient number, since it is larger than the sum of its proper divisors (123218866).

131433424 is an equidigital number, since it uses as much as digits as its factorization.

131433424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8214597 (or 8214591 counting only the distinct ones).

The product of its digits is 3456, while the sum is 25.

The square root of 131433424 is about 11464.4417221250. The cubic root of 131433424 is about 508.4348066052.

Adding to 131433424 its reverse (424334131), we get a palindrome (555767555).

The spelling of 131433424 in words is "one hundred thirty-one million, four hundred thirty-three thousand, four hundred twenty-four".