1001023447 has 2 divisors, whose sum is σ = 1001023448. Its totient is φ = 1001023446.

The previous prime is 1001023433. The next prime is 1001023451. The reversal of 1001023447 is 7443201001.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1001023447 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1001023147) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 500511723 + 500511724.

It is an arithmetic number, because the mean of its divisors is an integer number (500511724).

Almost surely, 2^1001023447 is an apocalyptic number.

1001023447 is a deficient number, since it is larger than the sum of its proper divisors (1).

1001023447 is an equidigital number, since it uses as much as digits as its factorization.

1001023447 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 672, while the sum is 22.

The square root of 1001023447 is about 31638.9545813385. The cubic root of 1001023447 is about 1000.3410326835.

Adding to 1001023447 its reverse (7443201001), we get a palindrome (8444224448).

The spelling of 1001023447 in words is "one billion, one million, twenty-three thousand, four hundred forty-seven".