2101321313 has 16 divisors (see below), whose sum is σ = 2587428480. Its totient is φ = 1661821056.

The previous prime is 2101321303. The next prime is 2101321349. The reversal of 2101321313 is 3131231012.

It is not a de Polignac number, because 2101321313 - 2⁴ = 2101321297 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2101321291 and 2101321300.

It is not an unprimeable number, because it can be changed into a prime (2101321303) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 275333 + ... + 282861.

It is an arithmetic number, because the mean of its divisors is an integer number (161714280).

Almost surely, 2^2101321313 is an apocalyptic number.

It is an amenable number.

2101321313 is a deficient number, since it is larger than the sum of its proper divisors (486107167).

2101321313 is a wasteful number, since it uses less digits than its factorization.

2101321313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10616.

The product of its (nonzero) digits is 108, while the sum is 17.

The square root of 2101321313 is about 45840.1713892957. The cubic root of 2101321313 is about 1280.8476873916.

Adding to 2101321313 its reverse (3131231012), we get a palindrome (5232552325).

The spelling of 2101321313 in words is "two billion, one hundred one million, three hundred twenty-one thousand, three hundred thirteen".