1001311103 has 8 divisors (see below), whose sum is σ = 1086094800. Its totient is φ = 917635968.

The previous prime is 1001311097. The next prime is 1001311109. The reversal of 1001311103 is 3011131001.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (1001311097) and next prime (1001311109).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1001311103 - 2¹² = 1001307007 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1001311109) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 275258 + ... + 278871.

It is an arithmetic number, because the mean of its divisors is an integer number (135761850).

Almost surely, 2^1001311103 is an apocalyptic number.

1001311103 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

1001311103 is a deficient number, since it is larger than the sum of its proper divisors (84783697).

1001311103 is a wasteful number, since it uses less digits than its factorization.

1001311103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 554281.

The product of its (nonzero) digits is 9, while the sum is 11.

The square root of 1001311103 is about 31643.5001698611. The cubic root of 1001311103 is about 1000.4368434733.

Adding to 1001311103 its reverse (3011131001), we get a palindrome (4012442104).

The spelling of 1001311103 in words is "one billion, one million, three hundred eleven thousand, one hundred three".