992131281 has 16 divisors (see below), whose sum is σ = 1475553600. Its totient is φ = 658842624.

The previous prime is 992131277. The next prime is 992131297. The reversal of 992131281 is 182131299.

992131281 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 992131281 - 2² = 992131277 is a prime.

It is a super-2 number, since 2×992131281² = 1968648957477401922, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (992131201) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 64551 + ... + 78428.

It is an arithmetic number, because the mean of its divisors is an integer number (92222100).

Almost surely, 2^992131281 is an apocalyptic number.

It is an amenable number.

992131281 is a deficient number, since it is larger than the sum of its proper divisors (483422319).

992131281 is a wasteful number, since it uses less digits than its factorization.

992131281 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 143245 (or 143239 counting only the distinct ones).

The product of its digits is 7776, while the sum is 36.

The square root of 992131281 is about 31498.1155150590. The cubic root of 992131281 is about 997.3701837959.

The spelling of 992131281 in words is "nine hundred ninety-two million, one hundred thirty-one thousand, two hundred eighty-one".