1012312999 has 2 divisors, whose sum is σ = 1012313000. Its totient is φ = 1012312998.

The previous prime is 1012312997. The next prime is 1012313011. The reversal of 1012312999 is 9992132101.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1012312999 - 2¹ = 1012312997 is a prime.

Together with 1012312997, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1012312993) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 506156499 + 506156500.

It is an arithmetic number, because the mean of its divisors is an integer number (506156500).

Almost surely, 2^1012312999 is an apocalyptic number.

1012312999 is a deficient number, since it is larger than the sum of its proper divisors (1).

1012312999 is an equidigital number, since it uses as much as digits as its factorization.

1012312999 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8748, while the sum is 37.

The square root of 1012312999 is about 31816.8665804790. The cubic root of 1012312999 is about 1004.0876017461.

The spelling of 1012312999 in words is "one billion, twelve million, three hundred twelve thousand, nine hundred ninety-nine".