313040141221 has 4 divisors (see below), whose sum is σ = 313050019212. Its totient is φ = 313030263232.

The previous prime is 313040141179. The next prime is 313040141237. The reversal of 313040141221 is 122141040313.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 122141040313 = 111977 ⋅1090769.

It can be written as a sum of positive squares in 2 ways, for example, as 111632164996 + 201407976225 = 334114^2 + 448785^2 .

It is a cyclic number.

It is not a de Polignac number, because 313040141221 - 2¹⁵ = 313040108453 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 313040141192 and 313040141201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (313040145221) 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, 4891306 + ... + 4954891.

It is an arithmetic number, because the mean of its divisors is an integer number (78262504803).

Almost surely, 2^313040141221 is an apocalyptic number.

It is an amenable number.

313040141221 is a deficient number, since it is larger than the sum of its proper divisors (9877991).

313040141221 is an equidigital number, since it uses as much as digits as its factorization.

313040141221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9877990.

The product of its (nonzero) digits is 576, while the sum is 22.

Adding to 313040141221 its reverse (122141040313), we get a palindrome (435181181534).

The spelling of 313040141221 in words is "three hundred thirteen billion, forty million, one hundred forty-one thousand, two hundred twenty-one".