312061111 has 4 divisors (see below), whose sum is σ = 328485400. Its totient is φ = 295636824.

The previous prime is 312061103. The next prime is 312061157. The reversal of 312061111 is 111160213.

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 312061111 - 2³ = 312061103 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 (312061181) 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, 8212116 + ... + 8212153.

It is an arithmetic number, because the mean of its divisors is an integer number (82121350).

Almost surely, 2^312061111 is an apocalyptic number.

312061111 is a deficient number, since it is larger than the sum of its proper divisors (16424289).

312061111 is a wasteful number, since it uses less digits than its factorization.

312061111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16424288.

The product of its (nonzero) digits is 36, while the sum is 16.

The square root of 312061111 is about 17665.2515125033. The cubic root of 312061111 is about 678.2865678322.

The spelling of 312061111 in words is "three hundred twelve million, sixty-one thousand, one hundred eleven".