311230031213012 has 24 divisors (see below), whose sum is σ = 563434367731200. Its totient is φ = 150248796442976.

The previous prime is 311230031212993. The next prime is 311230031213159. The reversal of 311230031213012 is 210312130032113.

It is a super-2 number, since 2×311230031213012² (a number of 30 digits) contains 22 as substring.

It is a congruent number.

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, 173360189 + ... + 175146267.

It is an arithmetic number, because the mean of its divisors is an integer number (23476431988800).

Almost surely, 2^{311230031213012} is an apocalyptic number.

It is an amenable number.

311230031213012 is a deficient number, since it is larger than the sum of its proper divisors (252204336518188).

311230031213012 is a wasteful number, since it uses less digits than its factorization.

311230031213012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3288295 (or 3288293 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 23.

Adding to 311230031213012 its reverse (210312130032113), we get a palindrome (521542161245125).

The spelling of 311230031213012 in words is "three hundred eleven trillion, two hundred thirty billion, thirty-one million, two hundred thirteen thousand, twelve".