313101101021 has 4 divisors (see below), whose sum is σ = 313106267292. Its totient is φ = 313095934752.

The previous prime is 313101100999. The next prime is 313101101041. The reversal of 313101101021 is 120101101313.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 120101101313 = 142169 ⋅844777.

It can be written as a sum of positive squares in 2 ways, for example, as 138030825625 + 175070275396 = 371525^2 + 418414^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-313101101021 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 313101100987 and 313101101005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (313101101041) 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, 2491136 + ... + 2613801.

It is an arithmetic number, because the mean of its divisors is an integer number (78276566823).

Almost surely, 2^313101101021 is an apocalyptic number.

It is an amenable number.

313101101021 is a deficient number, since it is larger than the sum of its proper divisors (5166271).

313101101021 is an equidigital number, since it uses as much as digits as its factorization.

313101101021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5166270.

The product of its (nonzero) digits is 18, while the sum is 14.

Adding to 313101101021 its reverse (120101101313), we get a palindrome (433202202334).

The spelling of 313101101021 in words is "three hundred thirteen billion, one hundred one million, one hundred one thousand, twenty-one".