993315971 has 2 divisors, whose sum is σ = 993315972. Its totient is φ = 993315970.

The previous prime is 993315959. The next prime is 993315977. The reversal of 993315971 is 179513399.

993315971 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 993315971 - 2²² = 989121667 is a prime.

It is not a weakly prime, because it can be changed into another prime (993315977) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 496657985 + 496657986.

It is an arithmetic number, because the mean of its divisors is an integer number (496657986).

Almost surely, 2^993315971 is an apocalyptic number.

993315971 is a deficient number, since it is larger than the sum of its proper divisors (1).

993315971 is an equidigital number, since it uses as much as digits as its factorization.

993315971 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 229635, while the sum is 47.

The square root of 993315971 is about 31516.9156327202. The cubic root of 993315971 is about 997.7670077905.

The spelling of 993315971 in words is "nine hundred ninety-three million, three hundred fifteen thousand, nine hundred seventy-one".