1313203011021 has 48 divisors (see below), whose sum is σ = 2142651888000. Its totient is φ = 767715822720.

The previous prime is 1313203011017. The next prime is 1313203011077. The reversal of 1313203011021 is 1201103023131.

1313203011021 is a `hidden beast` number, since 1 + 31 + 320 + 301 + 10 + 2 + 1 = 666.

It is not a de Polignac number, because 1313203011021 - 2² = 1313203011017 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1313203010985 and 1313203011003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1313203011721) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2855160 + ... + 3283038.

It is an arithmetic number, because the mean of its divisors is an integer number (44638581000).

Almost surely, 2^{1313203011021} is an apocalyptic number.

1313203011021 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1313203011021 is a deficient number, since it is larger than the sum of its proper divisors (829448876979).

1313203011021 is a wasteful number, since it uses less digits than its factorization.

1313203011021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 428994 (or 428991 counting only the distinct ones).

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

Adding to 1313203011021 its reverse (1201103023131), we get a palindrome (2514306034152).

The spelling of 1313203011021 in words is "one trillion, three hundred thirteen billion, two hundred three million, eleven thousand, twenty-one".