1312001356603 has 8 divisors (see below), whose sum is σ = 1499442370272. Its totient is φ = 1124563405056.

The previous prime is 1312001356553. The next prime is 1312001356643. The reversal of 1312001356603 is 3066531002131.

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

It is not a de Polignac number, because 1312001356603 - 2⁹ = 1312001356091 is a prime.

It is a super-2 number, since 2×1312001356603² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1312001356643) 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, 240801 + ... + 1637677.

It is an arithmetic number, because the mean of its divisors is an integer number (187430296284).

Almost surely, 2^{1312001356603} is an apocalyptic number.

1312001356603 is a deficient number, since it is larger than the sum of its proper divisors (187441013669).

1312001356603 is a wasteful number, since it uses less digits than its factorization.

1312001356603 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1531061.

The product of its (nonzero) digits is 9720, while the sum is 31.

Adding to 1312001356603 its reverse (3066531002131), we get a palindrome (4378532358734).

The spelling of 1312001356603 in words is "one trillion, three hundred twelve billion, one million, three hundred fifty-six thousand, six hundred three".