313221313031 has 8 divisors (see below), whose sum is σ = 341703091728. Its totient is φ = 284740720000.

The previous prime is 313221313001. The next prime is 313221313039. The reversal of 313221313031 is 130313122313.

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

It is a de Polignac number, because none of the positive numbers 2^k-313221313031 is a prime.

It is a super-2 number, since 2×313221313031² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 313221312988 and 313221313006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (313221313039) 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, 309881 + ... + 849981.

It is an arithmetic number, because the mean of its divisors is an integer number (42712886466).

Almost surely, 2^313221313031 is an apocalyptic number.

313221313031 is a deficient number, since it is larger than the sum of its proper divisors (28481778697).

313221313031 is a wasteful number, since it uses less digits than its factorization.

313221313031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 592833.

The product of its (nonzero) digits is 972, while the sum is 23.

Adding to 313221313031 its reverse (130313122313), we get a palindrome (443534435344).

The spelling of 313221313031 in words is "three hundred thirteen billion, two hundred twenty-one million, three hundred thirteen thousand, thirty-one".