1003981971 has 8 divisors (see below), whose sum is σ = 1417386384. Its totient is φ = 629949440.

The previous prime is 1003981967. The next prime is 1003981999. The reversal of 1003981971 is 1791893001.

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 1003981971 - 2² = 1003981967 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1003981471) 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, 9842910 + ... + 9843011.

It is an arithmetic number, because the mean of its divisors is an integer number (177173298).

Almost surely, 2^1003981971 is an apocalyptic number.

1003981971 is a deficient number, since it is larger than the sum of its proper divisors (413404413).

1003981971 is a wasteful number, since it uses less digits than its factorization.

1003981971 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19685941.

The product of its (nonzero) digits is 13608, while the sum is 39.

The square root of 1003981971 is about 31685.6745391352. The cubic root of 1003981971 is about 1001.3255657657.

The spelling of 1003981971 in words is "one billion, three million, nine hundred eighty-one thousand, nine hundred seventy-one".