312666101 has 4 divisors (see below), whose sum is σ = 341090304. Its totient is φ = 284241900.

The previous prime is 312666073. The next prime is 312666103. The reversal of 312666101 is 101666213.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 312666101 - 2²² = 308471797 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 (312666103) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14212085 + ... + 14212106.

It is an arithmetic number, because the mean of its divisors is an integer number (85272576).

Almost surely, 2^312666101 is an apocalyptic number.

It is an amenable number.

312666101 is a deficient number, since it is larger than the sum of its proper divisors (28424203).

312666101 is a wasteful number, since it uses less digits than its factorization.

312666101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28424202.

The product of its (nonzero) digits is 1296, while the sum is 26.

The square root of 312666101 is about 17682.3669512879. The cubic root of 312666101 is about 678.7246141812.

The spelling of 312666101 in words is "three hundred twelve million, six hundred sixty-six thousand, one hundred one".