312130021311 has 12 divisors (see below), whose sum is σ = 450874359000. Its totient is φ = 208077503760.

The previous prime is 312130021241. The next prime is 312130021327. The reversal of 312130021311 is 113120031213.

312130021311 is a `hidden beast` number, since 31 + 2 + 1 + 300 + 21 + 311 = 666.

It is not a de Polignac number, because 312130021311 - 2¹¹ = 312130019263 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (312130021111) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 546061 + ... + 960438.

It is an arithmetic number, because the mean of its divisors is an integer number (37572863250).

Almost surely, 2^312130021311 is an apocalyptic number.

312130021311 is a deficient number, since it is larger than the sum of its proper divisors (138744337689).

312130021311 is a wasteful number, since it uses less digits than its factorization.

312130021311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1529526 (or 1529523 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 18.

Adding to 312130021311 its reverse (113120031213), we get a palindrome (425250052524).

The spelling of 312130021311 in words is "three hundred twelve billion, one hundred thirty million, twenty-one thousand, three hundred eleven".