313711223661 has 36 divisors (see below), whose sum is σ = 499413758844. Its totient is φ = 189618042240.

The previous prime is 313711223659. The next prime is 313711223663. The reversal of 313711223661 is 166322117313.

313711223661 is a `hidden beast` number, since 3 + 1 + 371 + 1 + 223 + 6 + 61 = 666.

It is an interprime number because it is at equal distance from previous prime (313711223659) and next prime (313711223663).

It can be written as a sum of positive squares in 2 ways, for example, as 183899457225 + 129811766436 = 428835^2 + 360294^2 .

It is not a de Polignac number, because 313711223661 - 2¹ = 313711223659 is a prime.

It is a super-3 number, since 3×313711223661³ (a number of 35 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (313711223663) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 20041 + ... + 792353.

Almost surely, 2^313711223661 is an apocalyptic number.

It is an amenable number.

313711223661 is a deficient number, since it is larger than the sum of its proper divisors (185702535183).

313711223661 is a wasteful number, since it uses less digits than its factorization.

313711223661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 772714 (or 772700 counting only the distinct ones).

The product of its digits is 27216, while the sum is 36.

The spelling of 313711223661 in words is "three hundred thirteen billion, seven hundred eleven million, two hundred twenty-three thousand, six hundred sixty-one".