312211023311 has 12 divisors (see below), whose sum is σ = 343333779936. Its totient is φ = 283696137120.

The previous prime is 312211023277. The next prime is 312211023329. The reversal of 312211023311 is 113320112213.

It is a happy number.

It is not a de Polignac number, because 312211023311 - 2²² = 312206829007 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (312211023331) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 338711 + ... + 859736.

It is an arithmetic number, because the mean of its divisors is an integer number (28611148328).

Almost surely, 2^312211023311 is an apocalyptic number.

312211023311 is a deficient number, since it is larger than the sum of its proper divisors (31122756625).

312211023311 is a wasteful number, since it uses less digits than its factorization.

312211023311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1200622 (or 1200611 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 20.

Adding to 312211023311 its reverse (113320112213), we get a palindrome (425531135524).

The spelling of 312211023311 in words is "three hundred twelve billion, two hundred eleven million, twenty-three thousand, three hundred eleven".