1001401003 has 2 divisors, whose sum is σ = 1001401004. Its totient is φ = 1001401002.

The previous prime is 1001400977. The next prime is 1001401007. The reversal of 1001401003 is 3001041001.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1001401003 - 2¹⁷ = 1001269931 is a prime.

It is not a weakly prime, because it can be changed into another prime (1001401007) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 500700501 + 500700502.

It is an arithmetic number, because the mean of its divisors is an integer number (500700502).

Almost surely, 2^1001401003 is an apocalyptic number.

1001401003 is a deficient number, since it is larger than the sum of its proper divisors (1).

1001401003 is an equidigital number, since it uses as much as digits as its factorization.

1001401003 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12, while the sum is 10.

The square root of 1001401003 is about 31644.9206508722. The cubic root of 1001401003 is about 1000.4667830797.

Adding to 1001401003 its reverse (3001041001), we get a palindrome (4002442004).

The spelling of 1001401003 in words is "one billion, one million, four hundred one thousand, three".