1003340861 has 4 divisors (see below), whose sum is σ = 1003813824. Its totient is φ = 1002867900.

The previous prime is 1003340857. The next prime is 1003340873. The reversal of 1003340861 is 1680433001.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 1680433001 = 13 ⋅129264077.

It is a cyclic number.

It is not a de Polignac number, because 1003340861 - 2² = 1003340857 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 1003340861.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1003340851) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 233285 + ... + 237546.

It is an arithmetic number, because the mean of its divisors is an integer number (250953456).

Almost surely, 2^1003340861 is an apocalyptic number.

It is an amenable number.

1003340861 is a deficient number, since it is larger than the sum of its proper divisors (472963).

1003340861 is an equidigital number, since it uses as much as digits as its factorization.

1003340861 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 472962.

The product of its (nonzero) digits is 1728, while the sum is 26.

The square root of 1003340861 is about 31675.5562066398. The cubic root of 1003340861 is about 1001.1123824797.

Adding to 1003340861 its reverse (1680433001), we get a palindrome (2683773862).

The spelling of 1003340861 in words is "one billion, three million, three hundred forty thousand, eight hundred sixty-one".