313231023011321 has 4 divisors (see below), whose sum is σ = 326849763142272. Its totient is φ = 299612282880372.

The previous prime is 313231023011317. The next prime is 313231023011341. The reversal of 313231023011321 is 123110320132313.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 313231023011321 - 2² = 313231023011317 is a prime.

It is a super-2 number, since 2×313231023011321² (a number of 30 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (313231023011341) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6809370065441 + ... + 6809370065486.

It is an arithmetic number, because the mean of its divisors is an integer number (81712440785568).

Almost surely, 2^{313231023011321} is an apocalyptic number.

It is an amenable number.

313231023011321 is a deficient number, since it is larger than the sum of its proper divisors (13618740130951).

313231023011321 is a wasteful number, since it uses less digits than its factorization.

313231023011321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13618740130950.

The product of its (nonzero) digits is 1944, while the sum is 26.

Adding to 313231023011321 its reverse (123110320132313), we get a palindrome (436341343143634).

The spelling of 313231023011321 in words is "three hundred thirteen trillion, two hundred thirty-one billion, twenty-three million, eleven thousand, three hundred twenty-one".