313232011021 has 6 divisors (see below), whose sum is σ = 332741271530. Its totient is φ = 294806598336.

The previous prime is 313232011013. The next prime is 313232011063. The reversal of 313232011021 is 120110232313.

It can be written as a sum of positive squares in 3 ways, for example, as 236765935396 + 76466075625 = 486586^2 + 276525^2 .

It is not a de Polignac number, because 313232011021 - 2³ = 313232011013 is a prime.

It is a super-2 number, since 2×313232011021² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 313232011021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (313232011121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 541923606 + ... + 541924183.

Almost surely, 2^313232011021 is an apocalyptic number.

It is an amenable number.

313232011021 is a deficient number, since it is larger than the sum of its proper divisors (19509260509).

313232011021 is a wasteful number, since it uses less digits than its factorization.

313232011021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1083847823 (or 1083847806 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 313232011021 its reverse (120110232313), we get a palindrome (433342243334).

The spelling of 313232011021 in words is "three hundred thirteen billion, two hundred thirty-two million, eleven thousand, twenty-one".