313021221233 has 16 divisors (see below), whose sum is σ = 360014084736. Its totient is φ = 266599036800.

The previous prime is 313021221217. The next prime is 313021221251. The reversal of 313021221233 is 332122120313.

It is a cyclic number.

It is not a de Polignac number, because 313021221233 - 2⁴ = 313021221217 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 313021221199 and 313021221208.

It is not an unprimeable number, because it can be changed into a prime (313021221263) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2049158 + ... + 2196608.

It is an arithmetic number, because the mean of its divisors is an integer number (22500880296).

Almost surely, 2^313021221233 is an apocalyptic number.

It is an amenable number.

313021221233 is a deficient number, since it is larger than the sum of its proper divisors (46992863503).

313021221233 is a wasteful number, since it uses less digits than its factorization.

313021221233 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 149384.

The product of its (nonzero) digits is 1296, while the sum is 23.

Adding to 313021221233 its reverse (332122120313), we get a palindrome (645143341546).

The spelling of 313021221233 in words is "three hundred thirteen billion, twenty-one million, two hundred twenty-one thousand, two hundred thirty-three".