311323101225 has 48 divisors (see below), whose sum is σ = 517541488320. Its totient is φ = 165130732800.

The previous prime is 311323101223. The next prime is 311323101307. The reversal of 311323101225 is 522101323113.

It is a happy number.

It is not a de Polignac number, because 311323101225 - 2¹ = 311323101223 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 311323101195 and 311323101204.

It is not an unprimeable number, because it can be changed into a prime (311323101223) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 16255155 + ... + 16274295.

It is an arithmetic number, because the mean of its divisors is an integer number (10782114340).

Almost surely, 2^311323101225 is an apocalyptic number.

It is an amenable number.

311323101225 is a deficient number, since it is larger than the sum of its proper divisors (206218387095).

311323101225 is a wasteful number, since it uses less digits than its factorization.

311323101225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20330 (or 20325 counting only the distinct ones).

The product of its (nonzero) digits is 1080, while the sum is 24.

Adding to 311323101225 its reverse (522101323113), we get a palindrome (833424424338).

The spelling of 311323101225 in words is "three hundred eleven billion, three hundred twenty-three million, one hundred one thousand, two hundred twenty-five".