103131432 has 48 divisors (see below), whose sum is σ = 286870740. Its totient is φ = 33447168.

The previous prime is 103131397. The next prime is 103131439. The reversal of 103131432 is 234131301.

103131432 is a `hidden beast` number, since 103 + 131 + 432 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 87497316 + 15634116 = 9354^2 + 3954^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (103131439) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 16693 + ... + 22020.

Almost surely, 2^103131432 is an apocalyptic number.

103131432 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

103131432 is an abundant number, since it is smaller than the sum of its proper divisors (183739308).

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

103131432 is a wasteful number, since it uses less digits than its factorization.

103131432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38762 (or 38755 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

The square root of 103131432 is about 10155.3646906450. The cubic root of 103131432 is about 468.9541131345.

Adding to 103131432 its reverse (234131301), we get a palindrome (337262733).

The spelling of 103131432 in words is "one hundred three million, one hundred thirty-one thousand, four hundred thirty-two".