928131481 has 4 divisors (see below), whose sum is σ = 939313872. Its totient is φ = 916949092.

The previous prime is 928131467. The next prime is 928131499. The reversal of 928131481 is 184131829.

928131481 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 928131481 - 2⁷ = 928131353 is a prime.

It is a super-2 number, since 2×928131481² = 1722856092046506722, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 928131481.

It is not an unprimeable number, because it can be changed into a prime (928131401) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5591071 + ... + 5591236.

It is an arithmetic number, because the mean of its divisors is an integer number (234828468).

Almost surely, 2^928131481 is an apocalyptic number.

It is an amenable number.

928131481 is a deficient number, since it is larger than the sum of its proper divisors (11182391).

928131481 is a wasteful number, since it uses less digits than its factorization.

928131481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11182390.

The product of its digits is 13824, while the sum is 37.

The square root of 928131481 is about 30465.2503846596. The cubic root of 928131481 is about 975.4458556068.

The spelling of 928131481 in words is "nine hundred twenty-eight million, one hundred thirty-one thousand, four hundred eighty-one".