1321162003 has 8 divisors (see below), whose sum is σ = 1514108160. Its totient is φ = 1129268040.

The previous prime is 1321161977. The next prime is 1321162039. The reversal of 1321162003 is 3002611231.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1321162003 is a prime.

It is a super-3 number, since 3×1321162003³ (a number of 28 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1321165003) 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, 260353 + ... + 265378.

It is an arithmetic number, because the mean of its divisors is an integer number (189263520).

Almost surely, 2^1321162003 is an apocalyptic number.

1321162003 is a deficient number, since it is larger than the sum of its proper divisors (192946157).

1321162003 is an equidigital number, since it uses as much as digits as its factorization.

1321162003 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 526097.

The product of its (nonzero) digits is 216, while the sum is 19.

The square root of 1321162003 is about 36347.7922713333. The cubic root of 1321162003 is about 1097.2831030327.

Adding to 1321162003 its reverse (3002611231), we get a palindrome (4323773234).

The spelling of 1321162003 in words is "one billion, three hundred twenty-one million, one hundred sixty-two thousand, three".