428131312 has 20 divisors (see below), whose sum is σ = 948005296. Its totient is φ = 183484800.

The previous prime is 428131309. The next prime is 428131331. The reversal of 428131312 is 213131824.

It is a happy number.

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 3 ways as a sum of consecutive naturals, for example, 1911189 + ... + 1911412.

Almost surely, 2^428131312 is an apocalyptic number.

It is an amenable number.

428131312 is an abundant number, since it is smaller than the sum of its proper divisors (519873984).

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

428131312 is a wasteful number, since it uses less digits than its factorization.

428131312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3822616 (or 3822610 counting only the distinct ones).

The product of its digits is 1152, while the sum is 25.

The square root of 428131312 is about 20691.3342247425. The cubic root of 428131312 is about 753.6892668059.

The spelling of 428131312 in words is "four hundred twenty-eight million, one hundred thirty-one thousand, three hundred twelve".