999070231 has 2 divisors, whose sum is σ = 999070232. Its totient is φ = 999070230.

The previous prime is 999070223. The next prime is 999070249. The reversal of 999070231 is 132070999.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 999070231 - 2³ = 999070223 is a prime.

It is a super-2 number, since 2×999070231² = 1996282652940786722, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (999070931) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 499535115 + 499535116.

It is an arithmetic number, because the mean of its divisors is an integer number (499535116).

Almost surely, 2^999070231 is an apocalyptic number.

999070231 is a deficient number, since it is larger than the sum of its proper divisors (1).

999070231 is an equidigital number, since it uses as much as digits as its factorization.

999070231 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 30618, while the sum is 40.

The square root of 999070231 is about 31608.0722442860. The cubic root of 999070231 is about 999.6899808981.

The spelling of 999070231 in words is "nine hundred ninety-nine million, seventy thousand, two hundred thirty-one".