312015435211223 has 4 divisors (see below), whose sum is σ = 328437300222360. Its totient is φ = 295593570200088.

The previous prime is 312015435211217. The next prime is 312015435211267. The reversal of 312015435211223 is 322112534510213.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 312015435211223 - 2¹⁴ = 312015435194839 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 (312015435219223) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8210932505540 + ... + 8210932505577.

It is an arithmetic number, because the mean of its divisors is an integer number (82109325055590).

Almost surely, 2^{312015435211223} is an apocalyptic number.

312015435211223 is a deficient number, since it is larger than the sum of its proper divisors (16421865011137).

312015435211223 is a wasteful number, since it uses less digits than its factorization.

312015435211223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16421865011136.

The product of its (nonzero) digits is 43200, while the sum is 35.

Adding to 312015435211223 its reverse (322112534510213), we get a palindrome (634127969721436).

The spelling of 312015435211223 in words is "three hundred twelve trillion, fifteen billion, four hundred thirty-five million, two hundred eleven thousand, two hundred twenty-three".