1003056331691 has 8 divisors (see below), whose sum is σ = 1035474109824. Its totient is φ = 970642373760.

The previous prime is 1003056331687. The next prime is 1003056331733. The reversal of 1003056331691 is 1961336503001.

It is a happy number.

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 1003056331691 - 2² = 1003056331687 is a prime.

It is a super-2 number, since 2×1003056331691² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1003056331391) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 416606 + ... + 1476371.

It is an arithmetic number, because the mean of its divisors is an integer number (129434263728).

Almost surely, 2^{1003056331691} is an apocalyptic number.

1003056331691 is a deficient number, since it is larger than the sum of its proper divisors (32417778133).

1003056331691 is a wasteful number, since it uses less digits than its factorization.

1003056331691 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1910101.

The product of its (nonzero) digits is 43740, while the sum is 38.

Adding to 1003056331691 its sum of digits (38), we get a square (1003056331729 = 1001527²).

The spelling of 1003056331691 in words is "one trillion, three billion, fifty-six million, three hundred thirty-one thousand, six hundred ninety-one".