311430304242212 has 24 divisors (see below), whose sum is σ = 551457599738136. Its totient is φ = 153879168135168.

The previous prime is 311430304242209. The next prime is 311430304242271. The reversal of 311430304242212 is 212242403034113.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 4734732291136 + 306695571951076 = 2175944^2 + 17512726^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1022110433 + ... + 1022415080.

It is an arithmetic number, because the mean of its divisors is an integer number (22977399989089).

Almost surely, 2^{311430304242212} is an apocalyptic number.

It is an amenable number.

311430304242212 is a deficient number, since it is larger than the sum of its proper divisors (240027295495924).

311430304242212 is a wasteful number, since it uses less digits than its factorization.

311430304242212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2044525967 (or 2044525965 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 32.

Adding to 311430304242212 its reverse (212242403034113), we get a palindrome (523672707276325).

The spelling of 311430304242212 in words is "three hundred eleven trillion, four hundred thirty billion, three hundred four million, two hundred forty-two thousand, two hundred twelve".