30431132 has 24 divisors (see below), whose sum is σ = 54378240. Its totient is φ = 14897520.

The previous prime is 30431101. The next prime is 30431161. The reversal of 30431132 is 23113403.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 30431132.

It is a congruent number.

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, 72419 + ... + 72837.

It is an arithmetic number, because the mean of its divisors is an integer number (2265760).

Almost surely, 2^30431132 is an apocalyptic number.

It is an amenable number.

30431132 is a deficient number, since it is larger than the sum of its proper divisors (23947108).

30431132 is a wasteful number, since it uses less digits than its factorization.

30431132 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 761 (or 759 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 17.

The square root of 30431132 is about 5516.4419692407. The cubic root of 30431132 is about 312.2046515096.

Adding to 30431132 its reverse (23113403), we get a palindrome (53544535).

The spelling of 30431132 in words is "thirty million, four hundred thirty-one thousand, one hundred thirty-two".