993285931 has 16 divisors (see below), whose sum is σ = 1126056960. Its totient is φ = 867877920.

The previous prime is 993285907. The next prime is 993285941. The reversal of 993285931 is 139582399.

It is a cyclic number.

It is not a de Polignac number, because 993285931 - 2⁵ = 993285899 is a prime.

It is a super-2 number, since 2×993285931² = 1973233881445073522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (993285941) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 64156 + ... + 78118.

It is an arithmetic number, because the mean of its divisors is an integer number (70378560).

Almost surely, 2^993285931 is an apocalyptic number.

993285931 is a deficient number, since it is larger than the sum of its proper divisors (132771029).

993285931 is a wasteful number, since it uses less digits than its factorization.

993285931 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14226.

The product of its digits is 524880, while the sum is 49.

The square root of 993285931 is about 31516.4390596400. The cubic root of 993285931 is about 997.7569494862.

The spelling of 993285931 in words is "nine hundred ninety-three million, two hundred eighty-five thousand, nine hundred thirty-one".