921038312 has 16 divisors (see below), whose sum is σ = 1802031840. Its totient is φ = 440496496.

The previous prime is 921038311. The next prime is 921038323. The reversal of 921038312 is 213830129.

It is not an unprimeable number, because it can be changed into a prime (921038311) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2502638 + ... + 2503005.

It is an arithmetic number, because the mean of its divisors is an integer number (112626990).

Almost surely, 2^921038312 is an apocalyptic number.

921038312 is a gapful number since it is divisible by the number (92) formed by its first and last digit.

It is an amenable number.

921038312 is a deficient number, since it is larger than the sum of its proper divisors (880993528).

921038312 is a wasteful number, since it uses less digits than its factorization.

921038312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5005672 (or 5005668 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 29.

The square root of 921038312 is about 30348.6130160836. The cubic root of 921038312 is about 972.9545765745.

The spelling of 921038312 in words is "nine hundred twenty-one million, thirty-eight thousand, three hundred twelve".