313011223331 has 4 divisors (see below), whose sum is σ = 313085453592. Its totient is φ = 312936993072.

The previous prime is 313011223319. The next prime is 313011223333. The reversal of 313011223331 is 133322110313.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 133322110313 = 7 ⋅19046015759.

It is a cyclic number.

It is not a de Polignac number, because 313011223331 - 2²⁶ = 312944114467 is a prime.

It is a super-2 number, since 2×313011223331² (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 = 313011223297 and 313011223306.

It is not an unprimeable number, because it can be changed into a prime (313011223333) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 37108805 + ... + 37117238.

It is an arithmetic number, because the mean of its divisors is an integer number (78271363398).

Almost surely, 2^313011223331 is an apocalyptic number.

313011223331 is a deficient number, since it is larger than the sum of its proper divisors (74230261).

313011223331 is an equidigital number, since it uses as much as digits as its factorization.

313011223331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74230260.

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

Adding to 313011223331 its reverse (133322110313), we get a palindrome (446333333644).

The spelling of 313011223331 in words is "three hundred thirteen billion, eleven million, two hundred twenty-three thousand, three hundred thirty-one".