1321312013001 has 32 divisors (see below), whose sum is σ = 1982453760000. Its totient is φ = 869647141584.

The previous prime is 1321312012997. The next prime is 1321312013017. The reversal of 1321312013001 is 1003102131231.

1321312013001 is a `hidden beast` number, since 1 + 32 + 131 + 201 + 300 + 1 = 666.

It is not a de Polignac number, because 1321312013001 - 2² = 1321312012997 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1321312013041) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 33688200 + ... + 33727398.

It is an arithmetic number, because the mean of its divisors is an integer number (61951680000).

Almost surely, 2^{1321312013001} is an apocalyptic number.

It is an amenable number.

1321312013001 is a deficient number, since it is larger than the sum of its proper divisors (661141746999).

1321312013001 is a wasteful number, since it uses less digits than its factorization.

1321312013001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55090 (or 55084 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 18.

Adding to 1321312013001 its reverse (1003102131231), we get a palindrome (2324414144232).

The spelling of 1321312013001 in words is "one trillion, three hundred twenty-one billion, three hundred twelve million, thirteen thousand, one".