311230303012 has 6 divisors (see below), whose sum is σ = 544653030278.
Its totient is φ = 155615151504.
The previous prime is 311230302961. The next prime is 311230303051. The reversal of 311230303012 is 210303032113.
It can be written as a sum of positive squares in only one way, i.e., 181625982976 + 129604320036 = 426176^2 + 360006^2
It is an unprimeable number.
It is a pernicious number, because its binary representation contains a prime number (17) of ones.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38903787873 + ... + 38903787880.
Almost surely, 2311230303012 is an apocalyptic number.
It is an amenable number.
311230303012 is a deficient number, since it is larger than the sum of its proper divisors (233422727266).
311230303012 is a wasteful number, since it uses less digits than its factorization.
311230303012 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 77807575757 (or 77807575755 counting only the distinct ones).
The product of its (nonzero) digits is 324, while the sum is 19.
Adding to 311230303012 its reverse (210303032113), we get a palindrome (521533335125).
The spelling of 311230303012 in words is "three hundred eleven billion, two hundred thirty million, three hundred three thousand, twelve".