313233661 has 8 divisors (see below), whose sum is σ = 340807544. Its totient is φ = 286156800.

The previous prime is 313233659. The next prime is 313233673. The reversal of 313233661 is 166332313.

It can be written as a sum of positive squares in 4 ways, for example, as 156025 + 313077636 = 395^2 + 17694^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 313233661 - 2¹ = 313233659 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (313233691) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 122940 + ... + 125461.

It is an arithmetic number, because the mean of its divisors is an integer number (42600943).

Almost surely, 2^313233661 is an apocalyptic number.

It is an amenable number.

313233661 is a deficient number, since it is larger than the sum of its proper divisors (27573883).

313233661 is a wasteful number, since it uses less digits than its factorization.

313233661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 248511.

The product of its digits is 5832, while the sum is 28.

The square root of 313233661 is about 17698.4084312686. The cubic root of 313233661 is about 679.1350457248.

Adding to 313233661 its reverse (166332313), we get a palindrome (479565974).

The spelling of 313233661 in words is "three hundred thirteen million, two hundred thirty-three thousand, six hundred sixty-one".