999350531 has 2 divisors, whose sum is σ = 999350532. Its totient is φ = 999350530.

The previous prime is 999350479. The next prime is 999350533. The reversal of 999350531 is 135053999.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-999350531 is a prime.

It is a super-2 number, since 2×999350531² = 1997402967619963922, which contains 22 as substring.

Together with 999350533, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (999350533) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 499675265 + 499675266.

It is an arithmetic number, because the mean of its divisors is an integer number (499675266).

Almost surely, 2^999350531 is an apocalyptic number.

999350531 is a deficient number, since it is larger than the sum of its proper divisors (1).

999350531 is an equidigital number, since it uses as much as digits as its factorization.

999350531 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 164025, while the sum is 44.

The square root of 999350531 is about 31612.5059272434. The cubic root of 999350531 is about 999.7834634486.

The spelling of 999350531 in words is "nine hundred ninety-nine million, three hundred fifty thousand, five hundred thirty-one".