311223201452 has 12 divisors (see below), whose sum is σ = 545003949000. Its totient is φ = 155507787456.

The previous prime is 311223201433. The next prime is 311223201547. The reversal of 311223201452 is 254102322113.

It is a super-2 number, since 2×311223201452² (a number of 24 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25946573 + ... + 25958564.

It is an arithmetic number, because the mean of its divisors is an integer number (45416995750).

Almost surely, 2^311223201452 is an apocalyptic number.

It is an amenable number.

311223201452 is a deficient number, since it is larger than the sum of its proper divisors (233780747548).

311223201452 is a wasteful number, since it uses less digits than its factorization.

311223201452 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51906640 (or 51906638 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 26.

Adding to 311223201452 its reverse (254102322113), we get a palindrome (565325523565).

The spelling of 311223201452 in words is "three hundred eleven billion, two hundred twenty-three million, two hundred one thousand, four hundred fifty-two".