31434328 has 8 divisors (see below), whose sum is σ = 58939380. Its totient is φ = 15717160.

The previous prime is 31434287. The next prime is 31434329. The reversal of 31434328 is 82343413.

It is a tau number, because it is divible by the number of its divisors (8).

It is a junction number, because it is equal to n+sod(n) for n = 31434296 and 31434305.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31434329) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1964638 + ... + 1964653.

Almost surely, 2^31434328 is an apocalyptic number.

It is an amenable number.

31434328 is a deficient number, since it is larger than the sum of its proper divisors (27505052).

31434328 is a wasteful number, since it uses less digits than its factorization.

31434328 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3929297 (or 3929293 counting only the distinct ones).

The product of its digits is 6912, while the sum is 28.

The square root of 31434328 is about 5606.6325008868. The cubic root of 31434328 is about 315.5983520684.

The spelling of 31434328 in words is "thirty-one million, four hundred thirty-four thousand, three hundred twenty-eight".