312013111 has 4 divisors (see below), whose sum is σ = 313010272. Its totient is φ = 311015952.

The previous prime is 312013103. The next prime is 312013159. The reversal of 312013111 is 111310213.

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 312013111 - 2³ = 312013103 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 312013091 and 312013100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (312013211) 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, 498111 + ... + 498736.

It is an arithmetic number, because the mean of its divisors is an integer number (78252568).

Almost surely, 2^312013111 is an apocalyptic number.

312013111 is a deficient number, since it is larger than the sum of its proper divisors (997161).

312013111 is an equidigital number, since it uses as much as digits as its factorization.

312013111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 997160.

The product of its (nonzero) digits is 18, while the sum is 13.

The square root of 312013111 is about 17663.8928608617. The cubic root of 312013111 is about 678.2517889341.

Adding to 312013111 its reverse (111310213), we get a palindrome (423323324).

The spelling of 312013111 in words is "three hundred twelve million, thirteen thousand, one hundred eleven".