101020313 has 4 divisors (see below), whose sum is σ = 101239908. Its totient is φ = 100800720.

The previous prime is 101020303. The next prime is 101020327. The reversal of 101020313 is 313020101.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 313020101 = 2423 ⋅129187.

It can be written as a sum of positive squares in 2 ways, for example, as 55160329 + 45859984 = 7427^2 + 6772^2 .

It is a cyclic number.

It is not a de Polignac number, because 101020313 - 2²⁰ = 99971737 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 101020294 and 101020303.

It is not an unprimeable number, because it can be changed into a prime (101020303) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 109106 + ... + 110027.

It is an arithmetic number, because the mean of its divisors is an integer number (25309977).

Almost surely, 2^101020313 is an apocalyptic number.

It is an amenable number.

101020313 is a deficient number, since it is larger than the sum of its proper divisors (219595).

101020313 is an equidigital number, since it uses as much as digits as its factorization.

101020313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 219594.

The product of its (nonzero) digits is 18, while the sum is 11.

The square root of 101020313 is about 10050.8861798351. The cubic root of 101020313 is about 465.7321690949.

Adding to 101020313 its reverse (313020101), we get a palindrome (414040414).

The spelling of 101020313 in words is "one hundred one million, twenty thousand, three hundred thirteen".