428831011 has 8 divisors (see below), whose sum is σ = 490448384. Its totient is φ = 367302600.

The previous prime is 428830993. The next prime is 428831023. The reversal of 428831011 is 110138824.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 428831011 - 2²⁷ = 294613283 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (428831041) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11565 + ... + 31486.

It is an arithmetic number, because the mean of its divisors is an integer number (61306048).

Almost surely, 2^428831011 is an apocalyptic number.

428831011 is a deficient number, since it is larger than the sum of its proper divisors (61617373).

428831011 is a wasteful number, since it uses less digits than its factorization.

428831011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44481.

The product of its (nonzero) digits is 1536, while the sum is 28.

The square root of 428831011 is about 20708.2353424912. The cubic root of 428831011 is about 754.0996304683.

Adding to 428831011 its reverse (110138824), we get a palindrome (538969835).

The spelling of 428831011 in words is "four hundred twenty-eight million, eight hundred thirty-one thousand, eleven".