992831321 has 2 divisors, whose sum is σ = 992831322. Its totient is φ = 992831320.

The previous prime is 992831311. The next prime is 992831353. The reversal of 992831321 is 123138299.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 609102400 + 383728921 = 24680^2 + 19589^2 .

It is a cyclic number.

It is not a de Polignac number, because 992831321 - 2¹⁰ = 992830297 is a prime.

It is not a weakly prime, because it can be changed into another prime (992831311) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 496415660 + 496415661.

It is an arithmetic number, because the mean of its divisors is an integer number (496415661).

Almost surely, 2^992831321 is an apocalyptic number.

It is an amenable number.

992831321 is a deficient number, since it is larger than the sum of its proper divisors (1).

992831321 is an equidigital number, since it uses as much as digits as its factorization.

992831321 is an evil number, because the sum of its binary digits is even.

The product of its digits is 23328, while the sum is 38.

The square root of 992831321 is about 31509.2259663737. The cubic root of 992831321 is about 997.6047074881.

The spelling of 992831321 in words is "nine hundred ninety-two million, eight hundred thirty-one thousand, three hundred twenty-one".